diff --git a/src/__tests__/backup-plan-classification.test.ts b/src/__tests__/backup-plan-classification.test.ts
index 00811393c..fca11a857 100644
--- a/src/__tests__/backup-plan-classification.test.ts
+++ b/src/__tests__/backup-plan-classification.test.ts
@@ -462,6 +462,20 @@ describe("every backed-up model travels both ways, or is named as debt", () => {
     ).toEqual([]);
   });
 
+  it("proves the reminder engine models are on the covered side", () => {
+    // v1.37.20 (#223 / iOS #68) — the reminder came off the debt register and
+    // the completion ledger landed carried from the release that introduced
+    // it. Pinned by name so a future edit cannot quietly move either back to
+    // COVERAGE_PENDING: the ledger is the only copy of every satisfy and skip
+    // before the latest one, so "pending" would be a silent history loss, not
+    // a deferral.
+    for (const model of ["MeasurementReminder", "MeasurementReminderEvent"]) {
+      expect(BACKED_UP_MODELS).toContain(model);
+      expect(TWO_ENDED_MODELS).toContain(model);
+      expect(COVERAGE_PENDING).not.toHaveProperty(model);
+    }
+  });
+
   it("proves the structured-profile models are on the covered side", () => {
     // These account-owned rows are exported and restored explicitly rather
     // than being treated as reconstructible data.
diff --git a/src/app/api/admin/backups/[id]/restore/__tests__/round-trip.test.ts b/src/app/api/admin/backups/[id]/restore/__tests__/round-trip.test.ts
index 4d42c8519..9d6921831 100644
--- a/src/app/api/admin/backups/[id]/restore/__tests__/round-trip.test.ts
+++ b/src/app/api/admin/backups/[id]/restore/__tests__/round-trip.test.ts
@@ -292,6 +292,10 @@ function sourceClient() {
     encounterConditionLink: { findMany: vi.fn().mockResolvedValue([]) },
     vaccinationRecord: { findMany: vi.fn().mockResolvedValue([]) },
     vaccinationDocumentLink: { findMany: vi.fn().mockResolvedValue([]) },
+    // The reminder engine tables (v1.37.20, #223 / iOS #68). Empty for the
+    // same reason as the visit tables above.
+    measurementReminder: { findMany: vi.fn().mockResolvedValue([]) },
+    measurementReminderEvent: { findMany: vi.fn().mockResolvedValue([]) },
     customMetric: {
       findMany: vi.fn().mockResolvedValue([
         {
diff --git a/src/app/api/admin/backups/[id]/restore/route.ts b/src/app/api/admin/backups/[id]/restore/route.ts
index 13976d771..20506c963 100644
--- a/src/app/api/admin/backups/[id]/restore/route.ts
+++ b/src/app/api/admin/backups/[id]/restore/route.ts
@@ -50,6 +50,7 @@ import { restoreIntradayProfileData } from "@/lib/export/intraday-profile-backup
 import { restoreHealthScoreData } from "@/lib/export/health-score-backup";
 import { restoreVisitsData } from "@/lib/export/visits-backup";
 import { restoreVaccinationsData } from "@/lib/export/vaccinations-backup";
+import { restoreRemindersData } from "@/lib/export/reminders-backup";
 import { invalidateUserData } from "@/lib/cache/invalidate";
 
 export const dynamic = "force-dynamic";
@@ -95,6 +96,8 @@ interface RestoreResponse {
     encounterLinks: number;
     vaccinations: number;
     vaccinationLinks: number;
+    measurementReminders: number;
+    measurementReminderEvents: number;
   };
 }
 
@@ -1329,12 +1332,28 @@ const handler = apiHandler(
             });
           }
 
-          // Visits, the address book and the three link tables. Last on
-          // purpose: a link is written only when both of its ends exist, and
-          // the documents above are the final far side to land. Both ends of
-          // this section live in `src/lib/export/visits-backup.ts`, so a grep
-          // of THIS file alone will not find them — the same delegation as the
-          // cycle, profile, intraday and score restores above.
+          // The Vorsorge reminders and their completion ledger (v1.37.20,
+          // #223 / iOS #68), BEFORE the visits and the vaccinations: both of
+          // those remap a `reminderId` against the reminders in the database,
+          // so the reminders have to be in the database first or every
+          // appointment and booster reference would read as unresolvable and
+          // drop. Both ends of this section live in
+          // `src/lib/export/reminders-backup.ts`.
+          const remindersCleared = await restoreRemindersData(
+            tx,
+            ownerId,
+            payload,
+            skips,
+          );
+
+          // Visits, the address book and the three link tables. After the
+          // documents and the reminders on purpose: a link is written only
+          // when both of its ends exist, and the encounter's reminder
+          // reference remaps against the rows the branch above has just
+          // written. Both ends of this section live in
+          // `src/lib/export/visits-backup.ts`, so a grep of THIS file alone
+          // will not find them — the same delegation as the cycle, profile,
+          // intraday and score restores above.
           const visitsCleared = await restoreVisitsData(
             tx,
             ownerId,
@@ -1343,10 +1362,10 @@ const handler = apiHandler(
           );
 
           // The immunization log, after the visits: a dose remaps its
-          // practitioner and its encounter against rows the branch above has
-          // just written, and its document link needs the documents that
-          // landed before that. Both ends of this section live in
-          // `src/lib/export/vaccinations-backup.ts`.
+          // practitioner, its encounter and its booster reminder against rows
+          // the branches above have just written, and its document link needs
+          // the documents that landed before that. Both ends of this section
+          // live in `src/lib/export/vaccinations-backup.ts`.
           const vaccinationsCleared = await restoreVaccinationsData(
             tx,
             ownerId,
@@ -1385,6 +1404,9 @@ const handler = apiHandler(
             encounterLinks: visitsCleared.encounterLinks,
             vaccinations: vaccinationsCleared.vaccinations,
             vaccinationLinks: vaccinationsCleared.vaccinationLinks,
+            measurementReminders: remindersCleared.measurementReminders,
+            measurementReminderEvents:
+              remindersCleared.measurementReminderEvents,
           };
           return { cleared, skipped: summarizeRestoreSkips(skips) };
         },
@@ -1537,6 +1559,8 @@ const handler = apiHandler(
           encounterLinks: summary.encounterLinks,
           vaccinations: summary.vaccinations,
           vaccinationLinks: summary.vaccinationLinks,
+          measurementReminders: summary.measurementReminders,
+          measurementReminderEvents: summary.measurementReminderEvents,
         },
       },
     });
diff --git a/src/app/api/export/__tests__/per-type-routes.test.ts b/src/app/api/export/__tests__/per-type-routes.test.ts
index 2237b5c1f..dbd70b192 100644
--- a/src/app/api/export/__tests__/per-type-routes.test.ts
+++ b/src/app/api/export/__tests__/per-type-routes.test.ts
@@ -38,6 +38,10 @@ vi.mock("@/lib/db", () => ({
     encounterConditionLink: { findMany: vi.fn().mockResolvedValue([]) },
     vaccinationRecord: { findMany: vi.fn().mockResolvedValue([]) },
     vaccinationDocumentLink: { findMany: vi.fn().mockResolvedValue([]) },
+    // The reminder engine tables (v1.37.20, #223 / iOS #68). Empty for the
+    // same reason as the visit tables above.
+    measurementReminder: { findMany: vi.fn().mockResolvedValue([]) },
+    measurementReminderEvent: { findMany: vi.fn().mockResolvedValue([]) },
     // v1.15.0 — cycle tables read by the full-backup helper.
     cycleProfile: { findUnique: vi.fn() },
     menstrualCycle: { findMany: vi.fn() },
@@ -121,6 +125,10 @@ beforeEach(() => {
   vi.mocked(prisma.vaccinationDocumentLink.findMany).mockResolvedValue(
     [] as never,
   );
+  vi.mocked(prisma.measurementReminder.findMany).mockResolvedValue([] as never);
+  vi.mocked(prisma.measurementReminderEvent.findMany).mockResolvedValue(
+    [] as never,
+  );
 });
 
 afterEach(() => {
diff --git a/src/app/api/export/encrypted/__tests__/route.test.ts b/src/app/api/export/encrypted/__tests__/route.test.ts
index 47fc52e16..e124d475f 100644
--- a/src/app/api/export/encrypted/__tests__/route.test.ts
+++ b/src/app/api/export/encrypted/__tests__/route.test.ts
@@ -36,6 +36,10 @@ vi.mock("@/lib/db", () => ({
     encounterConditionLink: { findMany: vi.fn().mockResolvedValue([]) },
     vaccinationRecord: { findMany: vi.fn().mockResolvedValue([]) },
     vaccinationDocumentLink: { findMany: vi.fn().mockResolvedValue([]) },
+    // The reminder engine tables (v1.37.20, #223 / iOS #68). Empty for the
+    // same reason as the visit tables above.
+    measurementReminder: { findMany: vi.fn().mockResolvedValue([]) },
+    measurementReminderEvent: { findMany: vi.fn().mockResolvedValue([]) },
     cycleProfile: { findUnique: vi.fn().mockResolvedValue(null) },
     menstrualCycle: { findMany: vi.fn().mockResolvedValue([]) },
     cycleDayLog: { findMany: vi.fn().mockResolvedValue([]) },
diff --git a/src/lib/data-wipe/wipe-plan.ts b/src/lib/data-wipe/wipe-plan.ts
index 522296d04..311b68487 100644
--- a/src/lib/data-wipe/wipe-plan.ts
+++ b/src/lib/data-wipe/wipe-plan.ts
@@ -60,6 +60,10 @@ export const WIPE_MODELS = [
   // the account was doing, day by day, after a confirmation that said
   // otherwise.
   "HealthScoreRecord",
+  // The completion ledger before the reminder it hangs off: it cascades either
+  // way, but the child deleted first is what keeps its own count truthful on
+  // the audit row (v1.37.20, #223 / iOS #68).
+  "MeasurementReminderEvent",
   "MeasurementReminder",
 
   // ── Medication ──────────────────────────────────────────────────────────
diff --git a/src/lib/export/__tests__/full-backup-payload.test.ts b/src/lib/export/__tests__/full-backup-payload.test.ts
index 1bfe3d447..0992c9f81 100644
--- a/src/lib/export/__tests__/full-backup-payload.test.ts
+++ b/src/lib/export/__tests__/full-backup-payload.test.ts
@@ -259,6 +259,10 @@ function makePrisma() {
     encounterConditionLink: { findMany: vi.fn().mockResolvedValue([]) },
     vaccinationRecord: { findMany: vi.fn().mockResolvedValue([]) },
     vaccinationDocumentLink: { findMany: vi.fn().mockResolvedValue([]) },
+    // The reminder engine tables (v1.37.20, #223 / iOS #68). Empty for the
+    // same reason as the visit tables above.
+    measurementReminder: { findMany: vi.fn().mockResolvedValue([]) },
+    measurementReminderEvent: { findMany: vi.fn().mockResolvedValue([]) },
     // Left unmocked on purpose: `buildProfileBackupSection` runs for real
     // against these, so the assertions below exercise the builder rather than
     // a stand-in that would agree with whatever the payload happened to do.
diff --git a/src/lib/export/backup-plan.ts b/src/lib/export/backup-plan.ts
index d3f42b992..2302b88f4 100644
--- a/src/lib/export/backup-plan.ts
+++ b/src/lib/export/backup-plan.ts
@@ -99,6 +99,12 @@ export const BACKED_UP_MODELS = [
   "UserHealthProfile",
   "HealthProfileFactRevision",
   "MeasurementReminder",
+  // The Vorsorge completion ledger (v1.37.20, #223 / iOS #68). Looks derived
+  // and is the opposite: the reminder engine is single-cursor, so each satisfy
+  // overwrites the previous one on the reminder row and this table is the only
+  // copy of everything before the latest. Nothing can rebuild it, which is the
+  // exact test for BACKED_UP.
+  "MeasurementReminderEvent",
 
   // ── Cycle ─────────────────────────────────────────────────────────────────
   "CycleProfile",
@@ -202,6 +208,9 @@ export const BACKUP_WRITER_FILES: readonly string[] = [
   // reason: `documentLinks` is a field name on three models now, so each of
   // these reads through its OWN delegate here.
   "src/lib/export/vaccinations-backup.ts",
+  // The Vorsorge reminders and their completion ledger, both ends beside each
+  // other like the visits and vaccinations above.
+  "src/lib/export/reminders-backup.ts",
   "src/lib/cycle/backup.ts",
 ];
 
@@ -212,6 +221,7 @@ export const BACKUP_RESTORE_FILES: readonly string[] = [
   "src/lib/export/health-score-backup.ts",
   "src/lib/export/visits-backup.ts",
   "src/lib/export/vaccinations-backup.ts",
+  "src/lib/export/reminders-backup.ts",
   "src/lib/cycle/backup.ts",
 ];
 
@@ -264,12 +274,11 @@ export const TWO_ENDED_MODELS = [
   "Workout",
   "NutrientIntakeDay",
   "InboundDocument",
-  // Visits travel both ways from the release that introduces them. Two
-  // COVERAGE_PENDING neighbours already say what the alternative costs:
-  // reminders restore silent, and the filing between documents and conditions
-  // is lost. Leaving the visit links pending would return visits and documents
-  // with nothing between them — the same loss, one layer deeper — so the links
-  // land carried rather than owed.
+  // Visits travel both ways from the release that introduces them. A
+  // COVERAGE_PENDING neighbour already says what the alternative costs — the
+  // filing between documents and conditions is lost. Leaving the visit links
+  // pending would return visits and documents with nothing between them — the
+  // same loss, one layer deeper — so the links land carried rather than owed.
   "Practitioner",
   "Encounter",
   "EncounterDocumentLink",
@@ -284,6 +293,17 @@ export const TWO_ENDED_MODELS = [
   // else.
   "VaccinationRecord",
   "VaccinationDocumentLink",
+  // The Vorsorge reminders, off the debt register at last (v1.37.20, #223 /
+  // iOS #68), and the completion ledger carried with them from the release
+  // that introduces it. The pairing is deliberate: the ledger arriving is
+  // what turned "a restore leaves the account silent" from an inconvenience
+  // into a history loss, because the single-cursor engine keeps no other copy
+  // of past satisfies and skips. Restoring the reminder without its ledger
+  // would hand back a cadence with no evidence it was ever followed; the two
+  // land together. The encounter and vaccination `reminderId` references stop
+  // dropping to NULL in the same release — the rows they name come back now.
+  "MeasurementReminder",
+  "MeasurementReminderEvent",
 ] as const;
 
 /** One model claimed to travel both ways. */
@@ -340,8 +360,6 @@ export const COVERAGE_PENDING: Readonly<Record<string, string>> = {
     "Completed WHO-5, PHQ and GAD instruments with their scores and dates. Clinically meaningful history that no integration can re-sync, and the single largest gap on this list.",
   EcgRecording:
     "ECG traces and their rhythm classification. The originating device may still hold them, but a self-hoster who exported and wiped has nothing to re-sync from.",
-  MeasurementReminder:
-    "Per-metric reminder cadences the person configured. A restore leaves the account silent until each one is set up again.",
   WorkoutRoute:
     "GPS traces. Deliberately absent from the payload today and DISCLOSED as absent in the file's own manifest, which is why this is a documented exclusion rather than a silent one — but it is still a loss for a self-hoster with no other copy.",
   WorkoutSamples:
diff --git a/src/lib/export/full-backup-payload.ts b/src/lib/export/full-backup-payload.ts
index 22b31a229..af51b9d1d 100644
--- a/src/lib/export/full-backup-payload.ts
+++ b/src/lib/export/full-backup-payload.ts
@@ -49,6 +49,12 @@ import {
   type VaccinationsBackupCounts,
   type VaccinationsBackupSection,
 } from "@/lib/export/vaccinations-backup";
+import {
+  buildRemindersBackupSection,
+  countRemindersBackupSection,
+  type RemindersBackupCounts,
+  type RemindersBackupSection,
+} from "@/lib/export/reminders-backup";
 import {
   buildIntradayProfileBackupSection,
   countIntradayProfileBackupSection,
@@ -63,7 +69,8 @@ export interface FullBackupCounts
     IntradayProfileBackupCounts,
     HealthScoreBackupCounts,
     VisitsBackupCounts,
-    VaccinationsBackupCounts {
+    VaccinationsBackupCounts,
+    RemindersBackupCounts {
   measurements: number;
   medications: number;
   intakeEvents: number;
@@ -277,6 +284,7 @@ export async function buildFullBackupPayload(
     healthScoreRecords,
     visits,
     vaccinations,
+    reminders,
     nutrientDays,
   ] = await Promise.all([
     disasterRecovery
@@ -416,6 +424,13 @@ export async function buildFullBackupPayload(
     buildVaccinationsBackupSection(prisma, userId, {
       purpose: disasterRecovery ? "disaster-recovery" : "portable-export",
     }),
+    // The Vorsorge reminders and their completion ledger (v1.37.20, #223 /
+    // iOS #68). Both ends live in `src/lib/export/reminders-backup.ts` beside
+    // each other, the same arrangement as the two sections above and for the
+    // same reason.
+    buildRemindersBackupSection(prisma, userId, {
+      purpose: disasterRecovery ? "disaster-recovery" : "portable-export",
+    }),
     // Nutrient day totals were absent from every export path, which
     // contradicted the schema's own reason for denormalising the unit column
     // ("rows stay self-describing in exports even if the catalog ever drifts").
@@ -444,6 +459,7 @@ export async function buildFullBackupPayload(
   const healthScoreSection: HealthScoreBackupSection = healthScoreRecords;
   const visitsSection: VisitsBackupSection = visits;
   const vaccinationsSection: VaccinationsBackupSection = vaccinations;
+  const remindersSection: RemindersBackupSection = reminders;
 
   const payload = {
     schemaVersion: BACKUP_SCHEMA_VERSION,
@@ -679,6 +695,7 @@ export async function buildFullBackupPayload(
     ...healthScoreSection,
     ...visitsSection,
     ...vaccinationsSection,
+    ...remindersSection,
     nutrientDays: nutrientDays.map((n) => ({
       day: n.day,
       nutrient: n.nutrient,
@@ -708,6 +725,7 @@ export async function buildFullBackupPayload(
       ...countHealthScoreBackupSection(healthScoreRecords),
       ...countVisitsBackupSection(visits),
       ...countVaccinationsBackupSection(vaccinations),
+      ...countRemindersBackupSection(reminders),
     },
   };
 }
diff --git a/src/lib/export/reminders-backup.ts b/src/lib/export/reminders-backup.ts
new file mode 100644
index 000000000..5ad1a8b15
--- /dev/null
+++ b/src/lib/export/reminders-backup.ts
@@ -0,0 +1,394 @@
+/**
+ * The Vorsorge reminders and their completion ledger, with both backup ends
+ * in one file.
+ *
+ * Same arrangement as `visits-backup.ts` and `vaccinations-backup.ts`, for
+ * the same reason: a reader asking "is this carried at both ends?" answers it
+ * here, and a reader who greps only the restore ROUTE gets a false negative
+ * because the route delegates.
+ *
+ * Two models ride: the reminder and the ledger row behind it
+ * (v1.37.20, #223 / iOS #68). Both are carried rather than owed. The
+ * reminder spent its time on the coverage-pending register — "a restore
+ * leaves the account silent until each one is set up again" — and the ledger
+ * raised the cost of that debt the release it landed: the engine is
+ * single-cursor, so the ledger is the ONLY copy of every satisfy and skip
+ * before the latest one. A restore without this section hands back a silent
+ * account with no history of it ever having been diligent.
+ *
+ * Each model uses its own named select constant and its own delegate call.
+ * `events` is a relation field name here and nowhere else today, but the
+ * delegate-per-model shape is kept anyway — `documentLinks` taught this
+ * directory what a shared relation name does to a structural matcher.
+ *
+ * One reference needs care on the way back: `MeasurementReminderEvent.reminderId`
+ * addresses a reminder in this same section. The builder filters the ledger to
+ * the reminders it actually carries — a portable export omits tombstoned
+ * reminders, and a ledger row whose reminder is not in the file could never
+ * restore — so a file this release writes always resolves completely. A
+ * hand-edited or truncated file that does not is reported, never guessed at.
+ */
+import type { Prisma, PrismaClient } from "@/generated/prisma/client";
+import type {
+  MeasurementReminderEventKind,
+  MeasurementType,
+  ReminderOrigin,
+} from "@/generated/prisma/client";
+
+import {
+  recordUnknownKeys,
+  type RestoreSkipLog,
+} from "@/lib/export/restore-skips";
+
+export interface RemindersBackupOptions {
+  purpose?: "portable-export" | "disaster-recovery";
+}
+
+/** One configured Vorsorge cadence, exactly as the engine holds it. */
+export interface MeasurementReminderBackupEntry {
+  /** Always carried: the ledger rows, an encounter and a vaccination record
+   *  all address a reminder by it. */
+  id: string;
+  label: string;
+  measurementType: MeasurementType | null;
+  intervalDays: number | null;
+  rrule: string | null;
+  anchorDate: string | null;
+  endsOn: string | null;
+  origin: ReminderOrigin;
+  notifyHour: number;
+  location: string | null;
+  /** Server-computed and carried as computed — the restore writes it back
+   *  verbatim rather than recomputing, so the account resumes exactly the
+   *  due-state it was exported with. */
+  nextDueAt: string | null;
+  lastSatisfiedAt: string | null;
+  enabled: boolean;
+  vaccinationAntigen: string | null;
+  /** v1.37.20 — the snooze cursor. Verbatim: a snooze that has since expired
+   *  restores as an instant in the past, which every consumer already treats
+   *  as "not snoozed". */
+  snoozedUntil: string | null;
+  /** v1.37.20 — last honest skip. Never folded into `lastSatisfiedAt`; done
+   *  and skipped stay distinguishable through a restore too. */
+  lastSkippedAt: string | null;
+  /** v1.37.20 — lifetime skip counter. */
+  skipCount: number;
+  createdAt: string;
+  updatedAt: string;
+  deletedAt?: string | null;
+}
+
+/** One completion-ledger row: an honest satisfy or an honest skip. */
+export interface MeasurementReminderEventBackupEntry {
+  id: string;
+  reminderId: string;
+  kind: MeasurementReminderEventKind;
+  occurredAt: string;
+  /** Derived at write time against the pre-event `nextDueAt`, which is gone.
+   *  Carried verbatim because nothing can ever re-derive it. */
+  onTime: boolean;
+  source: string;
+  createdAt: string;
+}
+
+export interface RemindersBackupSection {
+  measurementReminders: MeasurementReminderBackupEntry[];
+  measurementReminderEvents: MeasurementReminderEventBackupEntry[];
+}
+
+export interface RemindersBackupCounts {
+  measurementReminders: number;
+  measurementReminderEvents: number;
+}
+
+/**
+ * Named select constants, one per model — a structural matcher binds a model
+ * to the literal beside its delegate call, matching the other section files.
+ */
+const MEASUREMENT_REMINDER_BACKUP_SELECT = {
+  id: true,
+  label: true,
+  measurementType: true,
+  intervalDays: true,
+  rrule: true,
+  anchorDate: true,
+  endsOn: true,
+  origin: true,
+  notifyHour: true,
+  location: true,
+  nextDueAt: true,
+  lastSatisfiedAt: true,
+  enabled: true,
+  vaccinationAntigen: true,
+  snoozedUntil: true,
+  lastSkippedAt: true,
+  skipCount: true,
+  createdAt: true,
+  updatedAt: true,
+  deletedAt: true,
+} as const;
+
+const MEASUREMENT_REMINDER_EVENT_BACKUP_SELECT = {
+  id: true,
+  reminderId: true,
+  kind: true,
+  occurredAt: true,
+  onTime: true,
+  source: true,
+  createdAt: true,
+} as const;
+
+/**
+ * Build the reminders slice of a user's full backup.
+ *
+ * Takes the delegates it uses rather than a whole client, matching the other
+ * section builders. A portable export omits tombstoned reminders so a restore
+ * cannot resurrect them — and it omits the ledger rows of an omitted reminder
+ * with it, because a ledger row whose reminder is not in the file could only
+ * ever restore as a reported drop. A disaster-recovery payload keeps both so
+ * the account comes back as itself.
+ */
+export async function buildRemindersBackupSection(
+  prisma: Pick<
+    PrismaClient,
+    "measurementReminder" | "measurementReminderEvent"
+  >,
+  userId: string,
+  options: RemindersBackupOptions = {},
+): Promise<RemindersBackupSection> {
+  const disasterRecovery = options.purpose === "disaster-recovery";
+
+  const [reminderRows, eventRows] = await Promise.all([
+    prisma.measurementReminder.findMany({
+      where: disasterRecovery ? { userId } : { userId, deletedAt: null },
+      orderBy: { createdAt: "asc" },
+      select: MEASUREMENT_REMINDER_BACKUP_SELECT,
+    }),
+    prisma.measurementReminderEvent.findMany({
+      where: { userId },
+      orderBy: { occurredAt: "asc" },
+      select: MEASUREMENT_REMINDER_EVENT_BACKUP_SELECT,
+    }),
+  ]);
+
+  // The ledger is filtered to the reminders the file actually carries. On a
+  // DR payload every reminder is carried and this is a no-op; on a portable
+  // export it removes the ledger of each omitted tombstone, so the file never
+  // states an event against a reminder it refuses to restore.
+  const carriedReminderIds = new Set(reminderRows.map((row) => row.id));
+
+  return {
+    measurementReminders: reminderRows.map((row) => ({
+      id: row.id,
+      label: row.label,
+      measurementType: row.measurementType,
+      intervalDays: row.intervalDays,
+      rrule: row.rrule,
+      anchorDate: row.anchorDate?.toISOString() ?? null,
+      endsOn: row.endsOn?.toISOString() ?? null,
+      origin: row.origin,
+      notifyHour: row.notifyHour,
+      location: row.location,
+      nextDueAt: row.nextDueAt?.toISOString() ?? null,
+      lastSatisfiedAt: row.lastSatisfiedAt?.toISOString() ?? null,
+      enabled: row.enabled,
+      vaccinationAntigen: row.vaccinationAntigen,
+      snoozedUntil: row.snoozedUntil?.toISOString() ?? null,
+      lastSkippedAt: row.lastSkippedAt?.toISOString() ?? null,
+      skipCount: row.skipCount,
+      createdAt: row.createdAt.toISOString(),
+      updatedAt: row.updatedAt.toISOString(),
+      ...(disasterRecovery
+        ? { deletedAt: row.deletedAt?.toISOString() ?? null }
+        : {}),
+    })),
+    measurementReminderEvents: eventRows
+      .filter((row) => carriedReminderIds.has(row.reminderId))
+      .map((row) => ({
+        id: row.id,
+        reminderId: row.reminderId,
+        kind: row.kind,
+        occurredAt: row.occurredAt.toISOString(),
+        onTime: row.onTime,
+        source: row.source,
+        createdAt: row.createdAt.toISOString(),
+      })),
+  };
+}
+
+/** Row counts for the audit trail, mirroring the other section counters. */
+export function countRemindersBackupSection(
+  section: RemindersBackupSection,
+): RemindersBackupCounts {
+  return {
+    measurementReminders: section.measurementReminders.length,
+    measurementReminderEvents: section.measurementReminderEvents.length,
+  };
+}
+
+/** Counts the reminder restore wiped, for the audit trail. */
+export interface RemindersRestoreCleared {
+  measurementReminders: number;
+  measurementReminderEvents: number;
+}
+
+/**
+ * The slice of a parsed backup this restore consumes.
+ *
+ * Required rather than optional: the payload schema defaults every key, so
+ * every caller already satisfies this, and one that stops satisfying it fails
+ * to compile instead of passing `undefined` into a loop that iterates zero
+ * times and reports success.
+ */
+export interface RemindersRestoreInput {
+  measurementReminders: RestoredMeasurementReminder[];
+  measurementReminderEvents: RestoredMeasurementReminderEvent[];
+}
+
+/**
+ * What the restore reads, as the parsed file actually presents it — a wider
+ * set than what this release writes: a portable export omits the tombstone,
+ * and every optional column arrives as `undefined` rather than `null`.
+ */
+type OptionalNullable<T> = { [K in keyof T]?: T[K] | undefined };
+
+export type RestoredMeasurementReminder = Pick<
+  MeasurementReminderBackupEntry,
+  "id" | "label" | "createdAt" | "updatedAt"
+> &
+  OptionalNullable<
+    Pick<
+      MeasurementReminderBackupEntry,
+      | "measurementType"
+      | "intervalDays"
+      | "rrule"
+      | "anchorDate"
+      | "endsOn"
+      | "origin"
+      | "notifyHour"
+      | "location"
+      | "nextDueAt"
+      | "lastSatisfiedAt"
+      | "enabled"
+      | "vaccinationAntigen"
+      | "snoozedUntil"
+      | "lastSkippedAt"
+      | "skipCount"
+    >
+  > & { deletedAt?: string | null };
+
+export type RestoredMeasurementReminderEvent = Pick<
+  MeasurementReminderEventBackupEntry,
+  "id" | "reminderId" | "occurredAt" | "onTime" | "source" | "createdAt"
+> & {
+  kind: MeasurementReminderEventKind;
+};
+
+/**
+ * Re-create the account's Vorsorge reminders and their completion ledger.
+ *
+ * Delete-then-recreate inside the caller's transaction, matching every other
+ * section. The ledger is deleted before the reminders so its cleared count is
+ * truthful (the cascade would empty it anyway, silently), and recreated after
+ * them, because a ledger row addresses its reminder by id.
+ *
+ * MUST be called BEFORE the encounters and the vaccination records are
+ * restored: both carry a `reminderId` that they remap against the reminders
+ * in the database, and calling this later would make every one of those
+ * references read as unresolvable and be dropped — a restore counted as
+ * successful while it quietly disconnected every booster and appointment.
+ */
+export async function restoreRemindersData(
+  tx: Prisma.TransactionClient,
+  ownerId: string,
+  payload: RemindersRestoreInput,
+  skips: RestoreSkipLog,
+): Promise<RemindersRestoreCleared> {
+  const clearedEvents = await tx.measurementReminderEvent.deleteMany({
+    where: { userId: ownerId },
+  });
+  const clearedReminders = await tx.measurementReminder.deleteMany({
+    where: { userId: ownerId },
+  });
+
+  if (payload.measurementReminders.length > 0) {
+    await tx.measurementReminder.createMany({
+      data: payload.measurementReminders.map((entry) => ({
+        id: entry.id,
+        userId: ownerId,
+        label: entry.label,
+        measurementType: entry.measurementType ?? null,
+        intervalDays: entry.intervalDays ?? null,
+        rrule: entry.rrule ?? null,
+        anchorDate: entry.anchorDate ? new Date(entry.anchorDate) : null,
+        endsOn: entry.endsOn ? new Date(entry.endsOn) : null,
+        // A file written before a column existed says nothing about it, and
+        // the schema default is what those rows were living as.
+        origin: entry.origin ?? "VORSORGE",
+        notifyHour: entry.notifyHour ?? 9,
+        location: entry.location ?? null,
+        // Verbatim, not recomputed: `nextDueAt` is server-authoritative and
+        // the exported value IS what the server had resolved. Recomputing
+        // here would move a due date the person had already been shown.
+        nextDueAt: entry.nextDueAt ? new Date(entry.nextDueAt) : null,
+        lastSatisfiedAt: entry.lastSatisfiedAt
+          ? new Date(entry.lastSatisfiedAt)
+          : null,
+        enabled: entry.enabled ?? true,
+        vaccinationAntigen: entry.vaccinationAntigen ?? null,
+        snoozedUntil: entry.snoozedUntil ? new Date(entry.snoozedUntil) : null,
+        lastSkippedAt: entry.lastSkippedAt
+          ? new Date(entry.lastSkippedAt)
+          : null,
+        skipCount: entry.skipCount ?? 0,
+        createdAt: new Date(entry.createdAt),
+        updatedAt: new Date(entry.updatedAt),
+        deletedAt: entry.deletedAt ? new Date(entry.deletedAt) : null,
+      })),
+    });
+  }
+
+  // The builder filters the ledger to carried reminders, so a file this
+  // release writes never drops here. A file that does reference a reminder it
+  // does not carry cannot have that row invented, and a dangling id would
+  // fail the foreign key and roll the whole restore back over one ledger
+  // line. The row is dropped and reported instead.
+  const restoredReminders = new Set(
+    payload.measurementReminders.map((entry) => entry.id),
+  );
+  const writableEvents: RestoredMeasurementReminderEvent[] = [];
+  const droppedReminderRefs: string[] = [];
+  for (const entry of payload.measurementReminderEvents) {
+    if (restoredReminders.has(entry.reminderId)) {
+      writableEvents.push(entry);
+    } else {
+      droppedReminderRefs.push(entry.reminderId);
+    }
+  }
+  if (writableEvents.length > 0) {
+    await tx.measurementReminderEvent.createMany({
+      data: writableEvents.map((entry) => ({
+        id: entry.id,
+        userId: ownerId,
+        reminderId: entry.reminderId,
+        kind: entry.kind,
+        occurredAt: new Date(entry.occurredAt),
+        onTime: entry.onTime,
+        source: entry.source,
+        createdAt: new Date(entry.createdAt),
+      })),
+    });
+  }
+  recordUnknownKeys(
+    skips,
+    "reminderReference",
+    [...new Set(droppedReminderRefs)],
+    droppedReminderRefs,
+  );
+
+  return {
+    measurementReminders: clearedReminders.count,
+    measurementReminderEvents: clearedEvents.count,
+  };
+}
diff --git a/src/lib/export/restore-skips.ts b/src/lib/export/restore-skips.ts
index 24fa35348..4336bf999 100644
--- a/src/lib/export/restore-skips.ts
+++ b/src/lib/export/restore-skips.ts
@@ -36,18 +36,26 @@
  * mechanism because the cost and the honest response are identical: an edge is
  * lost, the record it hangs off survives, and the operator is told which one.
  * What it names is a row the file pointed at that the restore did not put
- * back — a reminder, which is on the coverage-pending register and never
- * travels, or a document, lab result or condition episode whose id a portable
- * export does not carry.
+ * back — a reminder the file does not carry (a portable export omits
+ * tombstoned ones since v1.37.20; before that no reminder travelled at all),
+ * or a document, lab result or condition episode whose id a portable export
+ * does not carry.
  *
  * The sixth, `vaccinationReference`, is the same kind as `visitReference` and
  * is kept separate rather than folded into it so the report says which part of
  * the record lost an edge. It names a row an immunization entry pointed at
- * that the restore did not put back — a booster reminder, which never travels,
- * a practitioner or visit the file referenced without carrying, or a scanned
- * page whose id a portable export does not include.
+ * that the restore did not put back — a booster reminder the file does not
+ * carry, a practitioner or visit the file referenced without carrying, or a
+ * scanned page whose id a portable export does not include.
  *
- * The seventh, `checkupClosure`, is not about a restore at all, and it borrows
+ * The seventh, `reminderReference`, is the same kind as the two above, for
+ * the completion ledger (v1.37.20, #223 / iOS #68): a ledger row whose
+ * reminder the file does not carry. The builder filters the ledger to carried
+ * reminders at write time, so a file this release writes never trips it —
+ * it exists for the hand-edited or truncated file, where inventing the
+ * reminder and silently dropping the row are equally wrong.
+ *
+ * The eighth, `checkupClosure`, is not about a restore at all, and it borrows
  * this shape deliberately rather than growing a second reporting mechanism
  * beside it. The situation is the same one: something a write was asked to do
  * could not be done, the record itself survives, and the person is told which
@@ -62,6 +70,7 @@ export type SkippedCatalogue =
   | "moodTag"
   | "visitReference"
   | "vaccinationReference"
+  | "reminderReference"
   | "checkupClosure";
 
 /** One key this instance does not know, and the links it cost. */
diff --git a/src/lib/export/vaccinations-backup.ts b/src/lib/export/vaccinations-backup.ts
index e4515747e..f88bcc151 100644
--- a/src/lib/export/vaccinations-backup.ts
+++ b/src/lib/export/vaccinations-backup.ts
@@ -23,9 +23,12 @@
  *   - `practitionerId` and `encounterId` point at models that restore in the
  *     same run. They remap to the restored rows, and drop to NULL when the
  *     file references a row it does not carry.
- *   - `reminderId` points at a `MeasurementReminder`, which is on the
- *     coverage-pending register and does not come back. It resolves to NULL,
- *     never to a dangling id, and the drop is reported.
+ *   - `reminderId` points at a `MeasurementReminder`, which also restores in
+ *     the same run (v1.37.20, #223 / iOS #68 — it was on the coverage-pending
+ *     register before that and every reference was a known drop). It remaps
+ *     the same way, and resolves to NULL, with the drop reported, only when
+ *     the file genuinely lacks the reminder — a portable export omits
+ *     tombstoned ones.
  *   - `antigenSlug` is restored verbatim with no validation against the
  *     current catalogue. A slug this release no longer resolves must still
  *     come back; the renderer degrades to the free-text arm, which is the
@@ -63,9 +66,10 @@ export interface VaccinationBackupEntry {
   practitionerId: string | null;
   encounterId: string | null;
   /**
-   * Carried so the loss is visible in the file rather than inferred from its
-   * absence. The restore resolves it to NULL and names the drop: the reminder
-   * it points at is not in the backup.
+   * The booster reminder this dose recorded satisfying, which restores in the
+   * same run since v1.37.20. The restore remaps it against the restored
+   * reminders and drops it to NULL, with the drop named, only when the file
+   * lacks the reminder.
    */
   reminderId: string | null;
   /** Base64 ciphertext, carried verbatim — never decrypted into the file. */
@@ -253,11 +257,11 @@ function decodeCiphertext(encoded: string): Uint8Array<ArrayBuffer> {
  * section. The dose first, then the link, because a link addresses both of its
  * ends by id.
  *
- * MUST be called after the practitioners, encounters and documents have been
- * restored: the dose remaps two of those references against the database and
- * the link is written only when the document actually came back. Calling it
- * earlier would drop every reference and be counted as a successful restore of
- * a thinner record.
+ * MUST be called after the practitioners, encounters, documents and
+ * measurement reminders have been restored: the dose remaps three of those
+ * references against the database and the link is written only when the
+ * document actually came back. Calling it earlier would drop every reference
+ * and be counted as a successful restore of a thinner record.
  */
 export async function restoreVaccinationsData(
   tx: Prisma.TransactionClient,
@@ -272,10 +276,10 @@ export async function restoreVaccinationsData(
     where: { userId: ownerId },
   });
 
-  // Both far sides are restored by other branches of the same transaction, so
-  // the check is against the database rather than against the payload — this
-  // is the only place that can see all three sections at once.
-  const [practitionerIds, encounterIds] = await Promise.all([
+  // All three far sides are restored by other branches of the same
+  // transaction, so the check is against the database rather than against the
+  // payload — this is the only place that can see every section at once.
+  const [practitionerIds, encounterIds, reminderIds] = await Promise.all([
     tx.practitioner.findMany({
       where: { userId: ownerId },
       select: { id: true },
@@ -284,18 +288,24 @@ export async function restoreVaccinationsData(
       where: { userId: ownerId },
       select: { id: true },
     }),
+    tx.measurementReminder.findMany({
+      where: { userId: ownerId },
+      select: { id: true },
+    }),
   ]);
   const restoredPractitioners = new Set(practitionerIds.map((row) => row.id));
   const restoredEncounters = new Set(encounterIds.map((row) => row.id));
+  const restoredReminders = new Set(reminderIds.map((row) => row.id));
 
   // A row the file references but the restore did not bring back cannot be
   // invented, and a dangling id would fail the foreign key and roll the whole
   // restore back over one dose. The reference drops to NULL instead — the
-  // dose, its date, its antigen and its batch code all survive.
+  // dose, its date, its antigen and its batch code all survive. That includes
+  // the reminder since v1.37.20: it restores in the same run, so a drop here
+  // now means the file genuinely lacked it (a portable export omits
+  // tombstoned reminders), not that reminders never travel.
   const droppedPractitioners: string[] = [];
   const droppedEncounters: string[] = [];
-  // The reminder is on the coverage-pending register: it is not in the file at
-  // all, so every reference to one is a known, reportable drop.
   const droppedReminders: string[] = [];
 
   if (payload.vaccinations.length > 0) {
@@ -316,7 +326,13 @@ export async function restoreVaccinationsData(
         if (entry.encounterId && encounterId === null) {
           droppedEncounters.push(entry.encounterId);
         }
-        if (entry.reminderId) droppedReminders.push(entry.reminderId);
+        const reminderId =
+          entry.reminderId && restoredReminders.has(entry.reminderId)
+            ? entry.reminderId
+            : null;
+        if (entry.reminderId && reminderId === null) {
+          droppedReminders.push(entry.reminderId);
+        }
         return {
           id: entry.id,
           userId: ownerId,
@@ -332,8 +348,7 @@ export async function restoreVaccinationsData(
           site: entry.site ?? null,
           practitionerId,
           encounterId,
-          // Never the id the file carried: the row it named is not restored.
-          reminderId: null,
+          reminderId,
           noteEncrypted:
             entry.noteEncrypted == null
               ? null
diff --git a/src/lib/export/visits-backup.ts b/src/lib/export/visits-backup.ts
index 4b5eae712..b34dde4ba 100644
--- a/src/lib/export/visits-backup.ts
+++ b/src/lib/export/visits-backup.ts
@@ -8,11 +8,11 @@
  *
  * Five models ride: the practitioners, the encounters, and the three link
  * tables between an encounter and a document, a lab result or a condition
- * episode. All five are carried rather than owed. Two neighbours on the debt
- * register already say what the alternative costs — reminders restore silent,
- * and the filing between documents and conditions is lost — and a restore that
- * returned visits and documents with nothing between them would be the same
- * loss one layer deeper.
+ * episode. All five are carried rather than owed. A neighbour on the debt
+ * register already says what the alternative costs — the filing between
+ * documents and conditions is lost — and a restore that returned visits and
+ * documents with nothing between them would be the same loss one layer
+ * deeper.
  *
  * Every read is scoped to the owner. Each model uses its own named select
  * constant and its own delegate call rather than riding a parent's `include`:
@@ -20,12 +20,15 @@
  * relation-shaped write here would be attributed to whichever of them a
  * matcher happened to find first. Delegate calls cannot be confused that way.
  *
- * Two references deliberately do not survive a restore, and both are reported
- * rather than dropped:
+ * Two references can fail to resolve on a restore, and both are reported
+ * rather than dropped in silence:
  *
- *   - `Encounter.reminderId` points at a `MeasurementReminder`, which is on the
- *     coverage-pending register and does not come back. The column resolves to
- *     NULL, never to a dangling id.
+ *   - `Encounter.reminderId` points at a `MeasurementReminder`, which restores
+ *     in the same run (v1.37.20, #223 / iOS #68 — it was on the
+ *     coverage-pending register before that and every reference was a known
+ *     drop). It remaps against the restored reminders and resolves to NULL,
+ *     never to a dangling id, only when the file genuinely lacks the reminder
+ *     — a portable export omits tombstoned ones.
  *   - A link whose far side was not restored. A portable export carries no lab
  *     result ids, so a lab link in one cannot resolve; a disaster-recovery
  *     payload carries every id and they all do.
@@ -72,9 +75,9 @@ export interface EncounterBackupEntry {
   reasonEncrypted: string | null;
   outcomeEncrypted: string | null;
   /**
-   * Carried so the loss is visible in the file rather than inferred from its
-   * absence. The restore resolves it to NULL and names the drop: the reminder
-   * it points at is not in the backup.
+   * The appointment's reminder row, which restores in the same run since
+   * v1.37.20. The restore remaps it against the restored reminders and drops
+   * it to NULL, with the drop named, only when the file lacks the reminder.
    */
   reminderId: string | null;
   createdAt: string;
@@ -351,10 +354,12 @@ function decodeCiphertext(encoded: string): Uint8Array<ArrayBuffer> {
  * section. Parents first — practitioners, then encounters, then the links —
  * because a link addresses both of its ends by id.
  *
- * MUST be called after the documents, lab results and condition episodes have
- * been restored: a link is written only when both of its ends exist, and the
- * existence check is what decides. Calling it earlier would report every link
- * as unresolvable and be counted as a successful restore of nothing.
+ * MUST be called after the documents, lab results, condition episodes AND the
+ * measurement reminders have been restored: a link is written only when both
+ * of its ends exist, the encounter's `reminderId` remaps against the restored
+ * reminders, and the existence check is what decides. Calling it earlier would
+ * report every one of those references as unresolvable and be counted as a
+ * successful restore of a thinner record.
  */
 export async function restoreVisitsData(
   tx: Prisma.TransactionClient,
@@ -406,8 +411,17 @@ export async function restoreVisitsData(
   );
   const droppedPractitioners: string[] = [];
 
-  // The reminder is on the coverage-pending register: it is not in the file at
-  // all, so every reference to one is a known, reportable drop.
+  // The reminders are restored by another branch of the same transaction
+  // (v1.37.20 — they used to be on the coverage-pending register, when every
+  // reference was a known drop), so the check is against the database rather
+  // than against the payload. A reference the file genuinely lacks — a
+  // portable export omits tombstoned reminders — still drops to NULL and is
+  // still reported.
+  const reminderRows = await tx.measurementReminder.findMany({
+    where: { userId: ownerId },
+    select: { id: true },
+  });
+  const restoredReminders = new Set(reminderRows.map((row) => row.id));
   const droppedReminders: string[] = [];
 
   if (payload.encounters.length > 0) {
@@ -421,7 +435,13 @@ export async function restoreVisitsData(
         if (entry.practitionerId && practitionerId === null) {
           droppedPractitioners.push(entry.practitionerId);
         }
-        if (entry.reminderId) droppedReminders.push(entry.reminderId);
+        const reminderId =
+          entry.reminderId && restoredReminders.has(entry.reminderId)
+            ? entry.reminderId
+            : null;
+        if (entry.reminderId && reminderId === null) {
+          droppedReminders.push(entry.reminderId);
+        }
         return {
           id: entry.id,
           userId: ownerId,
@@ -437,8 +457,7 @@ export async function restoreVisitsData(
             entry.outcomeEncrypted == null
               ? null
               : decodeCiphertext(entry.outcomeEncrypted),
-          // Never the id the file carried: the row it named is not restored.
-          reminderId: null,
+          reminderId,
           createdAt: new Date(entry.createdAt),
           updatedAt: new Date(entry.updatedAt),
           deletedAt: entry.deletedAt ? new Date(entry.deletedAt) : null,
diff --git a/src/lib/validations/backup.ts b/src/lib/validations/backup.ts
index 2f1e696e1..88c20d4c5 100644
--- a/src/lib/validations/backup.ts
+++ b/src/lib/validations/backup.ts
@@ -46,6 +46,7 @@ import {
   IntakeAttributionSource,
   IntakeSource,
   MeasurementAggregationProvenance,
+  MeasurementReminderEventKind,
   MeasurementSource,
   MeasurementType,
   MedicationCategory,
@@ -54,6 +55,7 @@ import {
   MedicationSideEffectCategory,
   MedicationSideEffectEntry,
   OvulationTest,
+  ReminderOrigin,
   RhythmClassification,
   SecondarySymptom,
   SleepStage,
@@ -70,6 +72,7 @@ import {
   emergencyBloodTypeSchema,
   organDonorStatusSchema,
 } from "@/lib/validations/emergency-profile";
+import { REMINDER_EVENT_SOURCES } from "@/lib/measurement-reminders/satisfy";
 
 export const BACKUP_SCHEMA_VERSION = "2" as const;
 const LEGACY_BACKUP_SCHEMA_VERSION = "1" as const;
@@ -890,8 +893,8 @@ const encounterBackupSchema = z
     practitionerId: z.string().nullable().optional(),
     reasonEncrypted: base64BytesSchema.nullable().optional(),
     outcomeEncrypted: base64BytesSchema.nullable().optional(),
-    // Carried so the loss is visible in the file. The restore resolves it to
-    // NULL and names the drop: the reminder it points at does not travel.
+    // Remapped against the restored reminders (they travel since v1.37.20);
+    // dropped to NULL, with the drop named, only when the file lacks the row.
     reminderId: z.string().nullable().optional(),
     createdAt: isoDateTime,
     updatedAt: isoDateTime,
@@ -927,8 +930,8 @@ const vaccinationBackupSchema = z
     site: z.enum(VaccinationSite).nullable().optional(),
     practitionerId: z.string().nullable().optional(),
     encounterId: z.string().nullable().optional(),
-    // Carried so the loss is visible in the file. The restore resolves it to
-    // NULL and names the drop: the reminder it points at does not travel.
+    // Remapped against the restored reminders (they travel since v1.37.20);
+    // dropped to NULL, with the drop named, only when the file lacks the row.
     reminderId: z.string().nullable().optional(),
     noteEncrypted: base64BytesSchema.nullable().optional(),
     createdAt: isoDateTime,
@@ -945,6 +948,56 @@ const vaccinationLinkBackupSchema = z
   })
   .passthrough();
 
+/**
+ * One Vorsorge reminder, and one row of its completion ledger (v1.37.20,
+ * #223 / iOS #68).
+ *
+ * `id` is required on both: an encounter, a vaccination record and every
+ * ledger row address a reminder by it, and a ledger row is addressed by its
+ * own id on re-insert. The enums are exactly the API's own — `origin` and
+ * `kind` are the Prisma enums, and the ledger `source` is validated against
+ * the engine's closed call-site set rather than accepted as free text, so a
+ * file cannot smuggle a value the engine itself would never write.
+ */
+const measurementReminderBackupSchema = z
+  .object({
+    id: z.string().min(1),
+    label: z.string().min(1),
+    measurementType: z.enum(MeasurementType).nullable().optional(),
+    intervalDays: z.number().int().nullable().optional(),
+    rrule: z.string().nullable().optional(),
+    anchorDate: isoDateTime.nullable().optional(),
+    endsOn: isoDateTime.nullable().optional(),
+    origin: z.enum(ReminderOrigin).optional(),
+    notifyHour: z.number().int().min(0).max(23).optional(),
+    location: z.string().nullable().optional(),
+    // Server-computed and restored verbatim — recomputing on restore would
+    // move a due date the person had already been shown.
+    nextDueAt: isoDateTime.nullable().optional(),
+    lastSatisfiedAt: isoDateTime.nullable().optional(),
+    enabled: z.boolean().optional(),
+    vaccinationAntigen: z.string().nullable().optional(),
+    snoozedUntil: isoDateTime.nullable().optional(),
+    lastSkippedAt: isoDateTime.nullable().optional(),
+    skipCount: z.number().int().min(0).optional(),
+    createdAt: isoDateTime,
+    updatedAt: isoDateTime,
+    deletedAt: isoDateTime.nullable().optional(),
+  })
+  .passthrough();
+
+const measurementReminderEventBackupSchema = z
+  .object({
+    id: z.string().min(1),
+    reminderId: z.string().min(1),
+    kind: z.enum(MeasurementReminderEventKind),
+    occurredAt: isoDateTime,
+    onTime: z.boolean(),
+    source: z.enum(REMINDER_EVENT_SOURCES),
+    createdAt: isoDateTime,
+  })
+  .passthrough();
+
 const allergyBackupSchema = z
   .object({
     id: z.string().min(1),
@@ -1107,6 +1160,14 @@ export const backupPayloadSchema = z
     // writes [].
     vaccinations: z.array(vaccinationBackupSchema).default([]),
     vaccinationDocumentLinks: z.array(vaccinationLinkBackupSchema).default([]),
+    // The Vorsorge reminders and their completion ledger (v1.37.20, #223 /
+    // iOS #68). Defaulted for the same reason as the sections above: a file
+    // written before the reminders travelled carries no key, and an account
+    // with none writes [].
+    measurementReminders: z.array(measurementReminderBackupSchema).default([]),
+    measurementReminderEvents: z
+      .array(measurementReminderEventBackupSchema)
+      .default([]),
     manifest: backupManifestSchema.nullable().default(null),
     // v1.37.19 (A6-9) — field paths a PORTABLE export could not decrypt
     // (fail-soft nulls). Disclosed in the file so a nulled field is
@@ -1189,6 +1250,10 @@ export interface BackupSummary {
   vaccinations: number;
   /** v1.37.19 (A6-8) — vaccination↔document links. */
   vaccinationLinks: number;
+  /** v1.37.20 (#223 / iOS #68) — Vorsorge reminder cadences. */
+  measurementReminders: number;
+  /** v1.37.20 (#223 / iOS #68) — completion-ledger rows across every reminder. */
+  measurementReminderEvents: number;
 }
 
 export function summarizeBackup(payload: BackupPayload): BackupSummary {
@@ -1240,6 +1305,11 @@ export function summarizeBackup(payload: BackupPayload): BackupSummary {
       payload.encounterConditionLinks.length,
     vaccinations: payload.vaccinations.length,
     vaccinationLinks: payload.vaccinationDocumentLinks.length,
+    // v1.37.20 (#223 / iOS #68) — counted from the release that carries them,
+    // so the admin's "what did I just restore" answer never under-counts a
+    // file with reminders the way it once did for visits.
+    measurementReminders: payload.measurementReminders.length,
+    measurementReminderEvents: payload.measurementReminderEvents.length,
   };
 }
 
diff --git a/tests/integration/backup-round-trip.test.ts b/tests/integration/backup-round-trip.test.ts
index 966919fd2..2923d738b 100644
--- a/tests/integration/backup-round-trip.test.ts
+++ b/tests/integration/backup-round-trip.test.ts
@@ -153,6 +153,10 @@ const COUNT_BACK: Record<
     p.vaccinationRecord.count({ where: { userId } }),
   VaccinationDocumentLink: (p, userId) =>
     p.vaccinationDocumentLink.count({ where: { userId } }),
+  MeasurementReminder: (p, userId) =>
+    p.measurementReminder.count({ where: { userId } }),
+  MeasurementReminderEvent: (p, userId) =>
+    p.measurementReminderEvent.count({ where: { userId } }),
 };
 
 /**
@@ -438,6 +442,51 @@ async function seedEveryTwoEndedModel(prisma: PrismaClient): Promise<void> {
       noteEncrypted: encryptToBytes("ring the upper bell"),
     },
   });
+
+  // One Vorsorge reminder with the v1.37.20 skip/snooze columns all set, and
+  // two completion-ledger rows — one honest satisfy, one honest skip. Fat like
+  // the vaccination fixture below and for the same reason: the count-back
+  // proves the rows returned, the column-by-column assertion after the restore
+  // proves they returned WHOLE. The encounter and the dose below point their
+  // `reminderId` here, because both references now remap against the restored
+  // reminders and this fixture is what proves they survive rather than drop.
+  const reminder = await prisma.measurementReminder.create({
+    data: {
+      userId: OWNER_ID,
+      label: "Blutdruck messen",
+      measurementType: "BLOOD_PRESSURE_SYS",
+      intervalDays: 7,
+      notifyHour: 8,
+      location: "Zuhause",
+      nextDueAt: AT("2026-07-08T06:00:00.000Z"),
+      lastSatisfiedAt: AT("2026-07-01T06:05:00.000Z"),
+      vaccinationAntigen: "tetanus",
+      snoozedUntil: AT("2026-07-08T06:00:00.000Z"),
+      lastSkippedAt: AT("2026-06-24T06:00:00.000Z"),
+      skipCount: 2,
+    },
+  });
+  await prisma.measurementReminderEvent.create({
+    data: {
+      userId: OWNER_ID,
+      reminderId: reminder.id,
+      kind: "SATISFIED",
+      occurredAt: AT("2026-07-01T06:05:00.000Z"),
+      onTime: true,
+      source: "manual",
+    },
+  });
+  await prisma.measurementReminderEvent.create({
+    data: {
+      userId: OWNER_ID,
+      reminderId: reminder.id,
+      kind: "SKIPPED",
+      occurredAt: AT("2026-06-24T06:00:00.000Z"),
+      onTime: false,
+      source: "skip",
+    },
+  });
+
   const encounter = await prisma.encounter.create({
     data: {
       userId: OWNER_ID,
@@ -449,6 +498,7 @@ async function seedEveryTwoEndedModel(prisma: PrismaClient): Promise<void> {
       outcomeEncrypted: encryptToBytes(
         "ferritin back in range, recheck in a year",
       ),
+      reminderId: reminder.id,
     },
   });
   await prisma.encounterDocumentLink.create({
@@ -477,13 +527,12 @@ async function seedEveryTwoEndedModel(prisma: PrismaClient): Promise<void> {
   // transcribed from. Fat on purpose, against this file's own minimal-fixture
   // rule: a count-back proves the row returned, and the assertion after the
   // restore reads each column back so it also proves the row returned WHOLE.
-  // The practitioner and the encounter are the ones seeded above, because both
-  // are remapped on the way back and a reference to something the restore did
-  // not put back is a different case (covered by the skip test below).
-  //
-  // `reminderId` is deliberately NOT set here: it is the one reference that
-  // can never resolve, so setting it would make this test's "nothing was
-  // skipped" assertion false for a reason that is correct behaviour.
+  // The practitioner, the encounter and the reminder are the ones seeded
+  // above, because all three are remapped on the way back and a reference to
+  // something the restore did not put back is a different case (covered by
+  // the skip test below). `reminderId` used to be deliberately absent here —
+  // it was the one reference that could never resolve — and is deliberately
+  // present since v1.37.20, because resolving is now the behaviour under test.
   const vaccination = await prisma.vaccinationRecord.create({
     data: {
       userId: OWNER_ID,
@@ -496,6 +545,7 @@ async function seedEveryTwoEndedModel(prisma: PrismaClient): Promise<void> {
       site: "LEFT_ARM",
       practitionerId: practitioner.id,
       encounterId: encounter.id,
+      reminderId: reminder.id,
       noteEncrypted: encryptToBytes("sore arm for a day, nothing else"),
     },
   });
@@ -646,6 +696,7 @@ describe("every model the plan claims two-ended survives a real restore", () =>
       include: {
         practitioner: { select: { name: true } },
         encounter: { select: { occurredAt: true } },
+        reminder: { select: { label: true } },
         documentLinks: { select: { documentId: true } },
       },
     });
@@ -659,6 +710,10 @@ describe("every model the plan claims two-ended survives a real restore", () =>
       site: dose.site,
       practitioner: dose.practitioner?.name ?? null,
       encounterAt: dose.encounter?.occurredAt.toISOString() ?? null,
+      // The booster reference, resolved through the relation: non-null proves
+      // the id survived the round trip instead of dropping to NULL the way it
+      // had to before the reminders travelled.
+      reminder: dose.reminder?.label ?? null,
       links: dose.documentLinks.length,
       note: dose.noteEncrypted ? decryptFromBytes(dose.noteEncrypted) : null,
     }).toEqual({
@@ -671,21 +726,119 @@ describe("every model the plan claims two-ended survives a real restore", () =>
       site: "LEFT_ARM",
       practitioner: "Round-trip practice",
       encounterAt: "2026-06-30T08:00:00.000Z",
+      reminder: "Blutdruck messen",
       links: 1,
       note: "sore arm for a day, nothing else",
     });
+
+    // The reminder, read back column by column — including the three
+    // v1.37.20 columns (snooze cursor, last skip, skip counter), because a
+    // restore that defaulted them would hand back a cadence that looks never
+    // snoozed and never skipped, which is a history the account does not have.
+    const restoredReminder = await prisma.measurementReminder.findFirstOrThrow({
+      where: { userId: OWNER_ID },
+    });
+    expect({
+      label: restoredReminder.label,
+      measurementType: restoredReminder.measurementType,
+      intervalDays: restoredReminder.intervalDays,
+      rrule: restoredReminder.rrule,
+      anchorDate: restoredReminder.anchorDate,
+      endsOn: restoredReminder.endsOn,
+      origin: restoredReminder.origin,
+      notifyHour: restoredReminder.notifyHour,
+      location: restoredReminder.location,
+      nextDueAt: restoredReminder.nextDueAt?.toISOString() ?? null,
+      lastSatisfiedAt: restoredReminder.lastSatisfiedAt?.toISOString() ?? null,
+      enabled: restoredReminder.enabled,
+      vaccinationAntigen: restoredReminder.vaccinationAntigen,
+      snoozedUntil: restoredReminder.snoozedUntil?.toISOString() ?? null,
+      lastSkippedAt: restoredReminder.lastSkippedAt?.toISOString() ?? null,
+      skipCount: restoredReminder.skipCount,
+      deletedAt: restoredReminder.deletedAt,
+    }).toEqual({
+      label: "Blutdruck messen",
+      measurementType: "BLOOD_PRESSURE_SYS",
+      intervalDays: 7,
+      rrule: null,
+      anchorDate: null,
+      endsOn: null,
+      origin: "VORSORGE",
+      notifyHour: 8,
+      location: "Zuhause",
+      nextDueAt: "2026-07-08T06:00:00.000Z",
+      lastSatisfiedAt: "2026-07-01T06:05:00.000Z",
+      enabled: true,
+      vaccinationAntigen: "tetanus",
+      snoozedUntil: "2026-07-08T06:00:00.000Z",
+      lastSkippedAt: "2026-06-24T06:00:00.000Z",
+      skipCount: 2,
+      deletedAt: null,
+    });
+
+    // Both ledger rows, whole: the satisfy and the skip, with the resolved
+    // `onTime` verdicts. A restore cannot re-derive `onTime` — the pre-event
+    // `nextDueAt` is gone — so a defaulted value here would be an invented
+    // punctuality record.
+    const ledger = await prisma.measurementReminderEvent.findMany({
+      where: { userId: OWNER_ID },
+      orderBy: { occurredAt: "asc" },
+    });
+    expect(
+      ledger.map((event) => ({
+        reminderId: event.reminderId,
+        kind: event.kind,
+        occurredAt: event.occurredAt.toISOString(),
+        onTime: event.onTime,
+        source: event.source,
+      })),
+    ).toEqual([
+      {
+        reminderId: restoredReminder.id,
+        kind: "SKIPPED",
+        occurredAt: "2026-06-24T06:00:00.000Z",
+        onTime: false,
+        source: "skip",
+      },
+      {
+        reminderId: restoredReminder.id,
+        kind: "SATISFIED",
+        occurredAt: "2026-07-01T06:05:00.000Z",
+        onTime: true,
+        source: "manual",
+      },
+    ]);
+
+    // The appointment's reminder reference survives too — same remap, other
+    // referrer.
+    const restoredEncounter = await prisma.encounter.findFirstOrThrow({
+      where: { userId: OWNER_ID },
+      select: { reminderId: true },
+    });
+    expect(
+      restoredEncounter.reminderId,
+      "the encounter's reminder reference must survive now that the reminder travels",
+    ).toBe(restoredReminder.id);
   });
 
   /**
-   * The two references a dose can carry that the restore cannot honour, and
-   * the slug it must not judge.
+   * The reference a portable file genuinely lacks, and the slug the restore
+   * must not judge.
    *
-   * Separated from the round trip above because both are correct behaviour
-   * that shows up as a reported skip, and that file asserts nothing was
+   * The reminders travel since v1.37.20, so a reference to one is no longer a
+   * guaranteed drop — the round trip above proves it surviving. What can still
+   * genuinely be missing is a TOMBSTONED reminder in a portable export: the
+   * builder omits it (a restore must not resurrect a deletion) and omits its
+   * completion ledger with it, while a live dose that recorded satisfying it
+   * keeps its reference in the database. That reference then points at a row
+   * the file does not carry, which is exactly the case the restore reports.
+   *
+   * Separated from the round trip above because this is correct behaviour
+   * that shows up as a reported skip, and that test asserts nothing was
    * skipped. Reported is the whole point: a reference dropped in silence is
    * the same defect as a row dropped in silence, one field smaller.
    */
-  it("reports the reminder it cannot restore and keeps a slug it cannot resolve", async () => {
+  it("reports the tombstoned reminder a portable file omits and keeps a slug it cannot resolve", async () => {
     const prisma = getPrismaClient();
     await seedAdminSession(prisma);
     await createOwner(prisma);
@@ -696,6 +849,20 @@ describe("every model the plan claims two-ended survives a real restore", () =>
         label: "Tetanus booster",
         intervalDays: 3650,
         vaccinationAntigen: "tetanus",
+        deletedAt: AT("2026-07-01T00:00:00.000Z"),
+      },
+    });
+    // A ledger row on the tombstoned reminder. The builder must drop it from
+    // the file along with its reminder — a ledger row whose reminder is not
+    // carried could only ever restore as a reported loss.
+    await prisma.measurementReminderEvent.create({
+      data: {
+        userId: OWNER_ID,
+        reminderId: reminder.id,
+        kind: "SATISFIED",
+        occurredAt: AT("2026-06-01T09:00:00.000Z"),
+        onTime: true,
+        source: "vaccination",
       },
     });
     await prisma.vaccinationRecord.create({
@@ -713,8 +880,14 @@ describe("every model the plan claims two-ended survives a real restore", () =>
     });
 
     const { payload } = await buildFullBackupPayload(prisma, OWNER_ID, {
-      purpose: "disaster-recovery",
+      purpose: "portable-export",
     });
+    // The file must be silent about the tombstoned reminder AND its ledger —
+    // carrying the events of a reminder it refuses to restore would make
+    // every portable file this release writes restore with a reported loss.
+    expect(payload.measurementReminders).toEqual([]);
+    expect(payload.measurementReminderEvents).toEqual([]);
+
     await prisma.user.delete({ where: { id: OWNER_ID } });
     await createOwner(prisma);