diff --git a/.planning/ios-coord/v1.12.0-server-to-ios-fitbit-source-heads-up.md b/.planning/ios-coord/v1.12.0-server-to-ios-fitbit-source-heads-up.md
new file mode 100644
index 000000000..04b6216b2
--- /dev/null
+++ b/.planning/ios-coord/v1.12.0-server-to-ios-fitbit-source-heads-up.md
@@ -0,0 +1,44 @@
+# v1.12.0 — server → iOS: new `FITBIT` MeasurementSource heads-up
+
+**Date:** 2026-06-04
+**From:** server
+**Status:** landing in v1.12.0 (data-model foundation merged; sync/UI follow in
+later waves of the same release)
+
+## What is changing
+
+v1.12.0 adds a Fitbit/Pixel integration over the Google Health API. Like WHOOP
+and Withings, it is a **server-owned, read-only ingest** — there is no client
+write path; the batch + single-POST surfaces reject it. The rows surface through
+the same read/response shapes the iOS app already decodes (`/api/sync/changes`,
+the measurement list, charts).
+
+The one contract item for iOS in this wave:
+
+- **New `MeasurementSource` enum value: `FITBIT`** (exact spelling, uppercase).
+  Add the `FITBIT` case to the iOS DTO's `MeasurementSource` decoding so
+  `/api/sync/changes` and the measurement reads decode Fitbit rows. This is the
+  same contract that gated `WHOOP` and `APPLE_HEALTH`.
+
+> **Mismatched spelling = silent client-side decode drop.** A row tagged
+> `source: "FITBIT"` that the DTO cannot decode is silently skipped, so the
+> measurement count diverges from the server with no error surfaced. Pin the
+> exact spelling.
+
+## What is NOT changing
+
+- **No new `MeasurementType` values.** Every Fitbit launch metric maps onto an
+  existing type (`WEIGHT`, `BODY_FAT`, `OXYGEN_SATURATION`,
+  `HEART_RATE_VARIABILITY`, `RESTING_HEART_RATE`, `RESPIRATORY_RATE`, `PULSE`,
+  `WRIST_TEMPERATURE`, `ACTIVITY_STEPS`, `WALKING_RUNNING_DISTANCE`,
+  `ACTIVE_ENERGY_BURNED`, `FLIGHTS_CLIMBED`, `VO2_MAX`, `SLEEP_DURATION`, plus
+  `Workout` rows). No DTO `MeasurementType` change is needed.
+- **Blood glucose / blood pressure / body temperature are deferred.** Those
+  slots exist but are NOT in the launch sync set (gated on the Google Health
+  API roadmap). No action for iOS now.
+
+## Confirmation requested
+
+Confirm the iOS DTO carries the `FITBIT` case ahead of the v1.12.0 deploy. A
+follow-up `v1.12.0-server-to-ios-fitbit-LIVE.md` will land once the enum is live
+on apps01 (verified via `/api/version`).
diff --git a/docs/api/openapi.yaml b/docs/api/openapi.yaml
index eee70699e..201f73c0e 100644
--- a/docs/api/openapi.yaml
+++ b/docs/api/openapi.yaml
@@ -1189,6 +1189,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                       externalId:
                         type: string
                         maxLength: 128
@@ -1801,6 +1802,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 activeEnergy:
                   maxItems: 8
                   type: array
@@ -1813,6 +1815,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 walkingRunningDistance:
                   maxItems: 8
                   type: array
@@ -1825,6 +1828,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 flightsClimbed:
                   maxItems: 8
                   type: array
@@ -1837,6 +1841,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 sleep:
                   maxItems: 8
                   type: array
@@ -1849,6 +1854,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 weight:
                   maxItems: 8
                   type: array
@@ -1861,6 +1867,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bloodPressure:
                   maxItems: 8
                   type: array
@@ -1873,6 +1880,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 pulse:
                   maxItems: 8
                   type: array
@@ -1885,6 +1893,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bodyFat:
                   maxItems: 8
                   type: array
@@ -1897,6 +1906,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bodyTemperature:
                   maxItems: 8
                   type: array
@@ -1909,6 +1919,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 spo2:
                   maxItems: 8
                   type: array
@@ -1921,6 +1932,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 hrv:
                   maxItems: 8
                   type: array
@@ -1933,6 +1945,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 restingHeartRate:
                   maxItems: 8
                   type: array
@@ -1945,6 +1958,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 vo2Max:
                   maxItems: 8
                   type: array
@@ -1957,6 +1971,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 skinTemperature:
                   maxItems: 8
                   type: array
@@ -1969,6 +1984,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 respiratoryRate:
                   maxItems: 8
                   type: array
@@ -1981,6 +1997,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 recovery:
                   maxItems: 8
                   type: array
@@ -1993,6 +2010,7 @@ paths:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 metricPriority:
                   type: object
                   properties:
@@ -2008,6 +2026,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     activeEnergy:
                       maxItems: 8
                       type: array
@@ -2020,6 +2039,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     walkingRunningDistance:
                       maxItems: 8
                       type: array
@@ -2032,6 +2052,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     flightsClimbed:
                       maxItems: 8
                       type: array
@@ -2044,6 +2065,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     sleep:
                       maxItems: 8
                       type: array
@@ -2056,6 +2078,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     weight:
                       maxItems: 8
                       type: array
@@ -2068,6 +2091,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     bloodPressure:
                       maxItems: 8
                       type: array
@@ -2080,6 +2104,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     pulse:
                       maxItems: 8
                       type: array
@@ -2092,6 +2117,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     bodyFat:
                       maxItems: 8
                       type: array
@@ -2104,6 +2130,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     bodyTemperature:
                       maxItems: 8
                       type: array
@@ -2116,6 +2143,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     spo2:
                       maxItems: 8
                       type: array
@@ -2128,6 +2156,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     hrv:
                       maxItems: 8
                       type: array
@@ -2140,6 +2169,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     restingHeartRate:
                       maxItems: 8
                       type: array
@@ -2152,6 +2182,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     vo2Max:
                       maxItems: 8
                       type: array
@@ -2164,6 +2195,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     skinTemperature:
                       maxItems: 8
                       type: array
@@ -2176,6 +2208,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     respiratoryRate:
                       maxItems: 8
                       type: array
@@ -2188,6 +2221,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                     recovery:
                       maxItems: 8
                       type: array
@@ -2200,6 +2234,7 @@ paths:
                           - APPLE_HEALTH
                           - COMPUTED
                           - WHOOP
+                          - FITBIT
                 deviceTypePriority:
                   type: object
                   properties:
@@ -4778,6 +4813,7 @@ components:
             - APPLE_HEALTH
             - COMPUTED
             - WHOOP
+            - FITBIT
         notes:
           anyOf:
             - type: string
@@ -5093,6 +5129,7 @@ components:
             - APPLE_HEALTH
             - COMPUTED
             - WHOOP
+            - FITBIT
         notes:
           anyOf:
             - type: string
@@ -5252,6 +5289,7 @@ components:
                         - APPLE_HEALTH
                         - COMPUTED
                         - WHOOP
+                        - FITBIT
                     - type: "null"
                 start:
                   type: string
@@ -5366,6 +5404,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                   - type: "null"
               start:
                 type: string
@@ -5569,6 +5608,7 @@ components:
             - APPLE_HEALTH
             - COMPUTED
             - WHOOP
+            - FITBIT
         externalId:
           anyOf:
             - type: string
@@ -5673,6 +5713,7 @@ components:
             - APPLE_HEALTH
             - COMPUTED
             - WHOOP
+            - FITBIT
         externalId:
           anyOf:
             - type: string
@@ -6936,6 +6977,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             activeEnergy:
               maxItems: 8
               type: array
@@ -6948,6 +6990,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             walkingRunningDistance:
               maxItems: 8
               type: array
@@ -6960,6 +7003,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             flightsClimbed:
               maxItems: 8
               type: array
@@ -6972,6 +7016,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             sleep:
               maxItems: 8
               type: array
@@ -6984,6 +7029,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             weight:
               maxItems: 8
               type: array
@@ -6996,6 +7042,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             bloodPressure:
               maxItems: 8
               type: array
@@ -7008,6 +7055,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             pulse:
               maxItems: 8
               type: array
@@ -7020,6 +7068,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             bodyFat:
               maxItems: 8
               type: array
@@ -7032,6 +7081,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             bodyTemperature:
               maxItems: 8
               type: array
@@ -7044,6 +7094,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             spo2:
               maxItems: 8
               type: array
@@ -7056,6 +7107,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             hrv:
               maxItems: 8
               type: array
@@ -7068,6 +7120,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             restingHeartRate:
               maxItems: 8
               type: array
@@ -7080,6 +7133,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             vo2Max:
               maxItems: 8
               type: array
@@ -7092,6 +7146,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             skinTemperature:
               maxItems: 8
               type: array
@@ -7104,6 +7159,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             respiratoryRate:
               maxItems: 8
               type: array
@@ -7116,6 +7172,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             recovery:
               maxItems: 8
               type: array
@@ -7128,6 +7185,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             metricPriority:
               type: object
               properties:
@@ -7143,6 +7201,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 activeEnergy:
                   maxItems: 8
                   type: array
@@ -7155,6 +7214,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 walkingRunningDistance:
                   maxItems: 8
                   type: array
@@ -7167,6 +7227,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 flightsClimbed:
                   maxItems: 8
                   type: array
@@ -7179,6 +7240,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 sleep:
                   maxItems: 8
                   type: array
@@ -7191,6 +7253,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 weight:
                   maxItems: 8
                   type: array
@@ -7203,6 +7266,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bloodPressure:
                   maxItems: 8
                   type: array
@@ -7215,6 +7279,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 pulse:
                   maxItems: 8
                   type: array
@@ -7227,6 +7292,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bodyFat:
                   maxItems: 8
                   type: array
@@ -7239,6 +7305,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bodyTemperature:
                   maxItems: 8
                   type: array
@@ -7251,6 +7318,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 spo2:
                   maxItems: 8
                   type: array
@@ -7263,6 +7331,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 hrv:
                   maxItems: 8
                   type: array
@@ -7275,6 +7344,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 restingHeartRate:
                   maxItems: 8
                   type: array
@@ -7287,6 +7357,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 vo2Max:
                   maxItems: 8
                   type: array
@@ -7299,6 +7370,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 skinTemperature:
                   maxItems: 8
                   type: array
@@ -7311,6 +7383,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 respiratoryRate:
                   maxItems: 8
                   type: array
@@ -7323,6 +7396,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 recovery:
                   maxItems: 8
                   type: array
@@ -7335,6 +7409,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
               additionalProperties: false
             deviceTypePriority:
               type: object
@@ -7396,6 +7471,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             activeEnergy:
               maxItems: 8
               type: array
@@ -7408,6 +7484,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             walkingRunningDistance:
               maxItems: 8
               type: array
@@ -7420,6 +7497,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             flightsClimbed:
               maxItems: 8
               type: array
@@ -7432,6 +7510,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             sleep:
               maxItems: 8
               type: array
@@ -7444,6 +7523,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             weight:
               maxItems: 8
               type: array
@@ -7456,6 +7536,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             bloodPressure:
               maxItems: 8
               type: array
@@ -7468,6 +7549,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             pulse:
               maxItems: 8
               type: array
@@ -7480,6 +7562,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             bodyFat:
               maxItems: 8
               type: array
@@ -7492,6 +7575,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             bodyTemperature:
               maxItems: 8
               type: array
@@ -7504,6 +7588,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             spo2:
               maxItems: 8
               type: array
@@ -7516,6 +7601,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             hrv:
               maxItems: 8
               type: array
@@ -7528,6 +7614,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             restingHeartRate:
               maxItems: 8
               type: array
@@ -7540,6 +7627,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             vo2Max:
               maxItems: 8
               type: array
@@ -7552,6 +7640,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             skinTemperature:
               maxItems: 8
               type: array
@@ -7564,6 +7653,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             respiratoryRate:
               maxItems: 8
               type: array
@@ -7576,6 +7666,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             recovery:
               maxItems: 8
               type: array
@@ -7588,6 +7679,7 @@ components:
                   - APPLE_HEALTH
                   - COMPUTED
                   - WHOOP
+                  - FITBIT
             metricPriority:
               type: object
               properties:
@@ -7603,6 +7695,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 activeEnergy:
                   maxItems: 8
                   type: array
@@ -7615,6 +7708,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 walkingRunningDistance:
                   maxItems: 8
                   type: array
@@ -7627,6 +7721,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 flightsClimbed:
                   maxItems: 8
                   type: array
@@ -7639,6 +7734,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 sleep:
                   maxItems: 8
                   type: array
@@ -7651,6 +7747,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 weight:
                   maxItems: 8
                   type: array
@@ -7663,6 +7760,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bloodPressure:
                   maxItems: 8
                   type: array
@@ -7675,6 +7773,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 pulse:
                   maxItems: 8
                   type: array
@@ -7687,6 +7786,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bodyFat:
                   maxItems: 8
                   type: array
@@ -7699,6 +7799,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 bodyTemperature:
                   maxItems: 8
                   type: array
@@ -7711,6 +7812,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 spo2:
                   maxItems: 8
                   type: array
@@ -7723,6 +7825,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 hrv:
                   maxItems: 8
                   type: array
@@ -7735,6 +7838,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 restingHeartRate:
                   maxItems: 8
                   type: array
@@ -7747,6 +7851,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 vo2Max:
                   maxItems: 8
                   type: array
@@ -7759,6 +7864,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 skinTemperature:
                   maxItems: 8
                   type: array
@@ -7771,6 +7877,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 respiratoryRate:
                   maxItems: 8
                   type: array
@@ -7783,6 +7890,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
                 recovery:
                   maxItems: 8
                   type: array
@@ -7795,6 +7903,7 @@ components:
                       - APPLE_HEALTH
                       - COMPUTED
                       - WHOOP
+                      - FITBIT
               additionalProperties: false
             deviceTypePriority:
               type: object
diff --git a/messages/de.json b/messages/de.json
index 62f56f668..10302180e 100644
--- a/messages/de.json
+++ b/messages/de.json
@@ -3130,6 +3130,7 @@
           "MANUAL": "Manuelle Eingabe",
           "IMPORT": "Import",
           "WHOOP": "WHOOP",
+          "FITBIT": "Fitbit",
           "COMPUTED": "Berechnet"
         },
         "deviceLabels": {
diff --git a/messages/en.json b/messages/en.json
index 28e8ae249..d8fe8ad56 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -3130,6 +3130,7 @@
           "MANUAL": "Manual entry",
           "IMPORT": "Import",
           "WHOOP": "WHOOP",
+          "FITBIT": "Fitbit",
           "COMPUTED": "Computed"
         },
         "deviceLabels": {
diff --git a/messages/es.json b/messages/es.json
index fa606ac4b..0c78edc61 100644
--- a/messages/es.json
+++ b/messages/es.json
@@ -3130,6 +3130,7 @@
           "MANUAL": "Entrada manual",
           "IMPORT": "Importar",
           "WHOOP": "WHOOP",
+          "FITBIT": "Fitbit",
           "COMPUTED": "Calculado"
         },
         "deviceLabels": {
diff --git a/messages/fr.json b/messages/fr.json
index fb6ca414a..81d7b018b 100644
--- a/messages/fr.json
+++ b/messages/fr.json
@@ -3130,6 +3130,7 @@
           "MANUAL": "Saisie manuelle",
           "IMPORT": "Importer",
           "WHOOP": "WHOOP",
+          "FITBIT": "Fitbit",
           "COMPUTED": "Calculé"
         },
         "deviceLabels": {
diff --git a/messages/it.json b/messages/it.json
index d03d132d7..61a22b2af 100644
--- a/messages/it.json
+++ b/messages/it.json
@@ -3130,6 +3130,7 @@
           "MANUAL": "Inserimento manuale",
           "IMPORT": "Importa",
           "WHOOP": "WHOOP",
+          "FITBIT": "Fitbit",
           "COMPUTED": "Calcolato"
         },
         "deviceLabels": {
diff --git a/messages/pl.json b/messages/pl.json
index 8229ce793..1c83dc2f0 100644
--- a/messages/pl.json
+++ b/messages/pl.json
@@ -3130,6 +3130,7 @@
           "MANUAL": "Wpis ręczny",
           "IMPORT": "Importuj",
           "WHOOP": "WHOOP",
+          "FITBIT": "Fitbit",
           "COMPUTED": "Obliczone"
         },
         "deviceLabels": {
diff --git a/prisma/migrations/0117_v1120_fitbit_integration/migration.sql b/prisma/migrations/0117_v1120_fitbit_integration/migration.sql
new file mode 100644
index 000000000..d909b7466
--- /dev/null
+++ b/prisma/migrations/0117_v1120_fitbit_integration/migration.sql
@@ -0,0 +1,83 @@
+-- v1.12.0 — Fitbit/Pixel integration via the Google Health API (schema + data
+-- layer).
+--
+-- Purely-additive: one enum-extension, two new tables, and two new nullable
+-- columns on `users`. No backfill, no existing row touched. Unlike the WHOOP
+-- migration (0111) this adds NO new `measurement_type` values — every Fitbit
+-- launch metric maps onto an existing type.
+--
+--   1. `measurement_source` += `FITBIT` for the server-side native ingest.
+--   2. `fitbit_connections` — per-user encrypted token row (1:1 with users),
+--      mirroring `whoop_connections` minus `max_heart_rate`, plus
+--      `fitbit_user_id` and `backfill_completed_at`.
+--   3. `fitbit_oauth_states` — short-lived `(nonce → userId)` CSRF ledger,
+--      identical in shape to `whoop_oauth_states`.
+--   4. `users` += `fitbit_client_id_encrypted` / `fitbit_client_secret_encrypted`
+--      — per-user BYO-keys (Google's Testing-mode per-app authorized-user cap
+--      makes a single shared client unworkable for a multi-operator product).
+--
+-- Idempotent guards (`IF NOT EXISTS`) make reruns safe. Forward-only.
+--
+-- Reversibility: Postgres cannot remove an enum value, so `FITBIT` stays; with
+-- no rows carrying it it is inert. The two tables drop with `DROP TABLE IF
+-- EXISTS`, the two columns with `DROP COLUMN IF EXISTS`.
+
+-- ── 1. measurement_source — append the Fitbit server-owned source ──────
+ALTER TYPE "measurement_source" ADD VALUE IF NOT EXISTS 'FITBIT';
+
+-- ── 2. fitbit_connections ─────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS "fitbit_connections" (
+    "id"                    TEXT            NOT NULL,
+    "user_id"               TEXT            NOT NULL,
+    "fitbit_user_id"        TEXT            NOT NULL,
+    "access_token"          TEXT            NOT NULL,
+    "refresh_token"         TEXT            NOT NULL,
+    "token_expires_at"      TIMESTAMP(3)    NOT NULL,
+    "scope"                 TEXT,
+    "last_synced_at"        TIMESTAMP(3),
+    "backfill_completed_at" TIMESTAMP(3),
+    "created_at"            TIMESTAMP(3)    NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at"            TIMESTAMP(3)    NOT NULL,
+
+    CONSTRAINT "fitbit_connections_pkey" PRIMARY KEY ("id")
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS "fitbit_connections_user_id_key"
+    ON "fitbit_connections" ("user_id");
+
+DO $$ BEGIN
+    ALTER TABLE "fitbit_connections"
+        ADD CONSTRAINT "fitbit_connections_user_id_fkey"
+        FOREIGN KEY ("user_id") REFERENCES "users"("id")
+        ON DELETE CASCADE ON UPDATE CASCADE;
+EXCEPTION
+    WHEN duplicate_object THEN NULL;
+END $$;
+
+-- ── 3. fitbit_oauth_states ────────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS "fitbit_oauth_states" (
+    "nonce"      TEXT            NOT NULL,
+    "user_id"    TEXT            NOT NULL,
+    "created_at" TIMESTAMP(3)    NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "expires_at" TIMESTAMP(3)    NOT NULL,
+
+    CONSTRAINT "fitbit_oauth_states_pkey" PRIMARY KEY ("nonce")
+);
+
+CREATE INDEX IF NOT EXISTS "fitbit_oauth_states_expires_at_idx"
+    ON "fitbit_oauth_states" ("expires_at");
+
+DO $$ BEGIN
+    ALTER TABLE "fitbit_oauth_states"
+        ADD CONSTRAINT "fitbit_oauth_states_user_id_fkey"
+        FOREIGN KEY ("user_id") REFERENCES "users"("id")
+        ON DELETE CASCADE ON UPDATE CASCADE;
+EXCEPTION
+    WHEN duplicate_object THEN NULL;
+END $$;
+
+-- ── 4. users — per-user Fitbit BYO-key columns (encrypted at app level) ─
+ALTER TABLE "users"
+    ADD COLUMN IF NOT EXISTS "fitbit_client_id_encrypted" TEXT;
+ALTER TABLE "users"
+    ADD COLUMN IF NOT EXISTS "fitbit_client_secret_encrypted" TEXT;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 358f0c0ad..8880649d1 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -66,6 +66,14 @@ model User {
   whoopClientIdEncrypted     String? @map("whoop_client_id_encrypted")
   whoopClientSecretEncrypted String? @map("whoop_client_secret_encrypted")
 
+  // v1.12.0 — Fitbit/Pixel OAuth credentials (per-user BYO-keys, encrypted at
+  // app level) over the Google Health API. The per-app authorized-user cap in
+  // Google's Testing mode makes a single shared client unworkable for a
+  // multi-operator product, so each self-hoster registers their own Google
+  // Cloud OAuth client and pastes the client id/secret into Settings.
+  fitbitClientIdEncrypted     String? @map("fitbit_client_id_encrypted")
+  fitbitClientSecretEncrypted String? @map("fitbit_client_secret_encrypted")
+
   // moodLog integration (per-user, encrypted)
   moodLogUrlEncrypted    String?   @map("mood_log_url_encrypted")
   moodLogApiKeyEncrypted String?   @map("mood_log_api_key_encrypted")
@@ -340,6 +348,10 @@ model User {
   // OAuth-state ledger (1:N) relations.
   whoopConnection        WhoopConnection?
   whoopOAuthStates       WhoopOAuthState[]
+  // v1.12.0 — Fitbit/Pixel integration. Mirrors the WHOOP connection (1:1) +
+  // OAuth-state ledger (1:N) relations.
+  fitbitConnection       FitbitConnection?
+  fitbitOAuthStates      FitbitOAuthState[]
   moodEntries            MoodEntry[]
   notificationChannels   NotificationChannel[]
   pushSubscriptions      PushSubscription[]
@@ -672,6 +684,10 @@ enum MeasurementSource {
   // (no client write path) as `source = WHOOP` rows. iOS DTO mirrors this
   // exact spelling so the `/api/sync/changes` delta feed decodes the rows.
   WHOOP
+  // v1.12.0 — Fitbit/Pixel integration via the Google Health API. Server-owned
+  // (no client write path); rejected on batch + single POST like WITHINGS/WHOOP.
+  // iOS DTO mirrors this exact spelling so /api/sync/changes decodes the rows.
+  FITBIT
 
   @@map("measurement_source")
 }
@@ -1827,6 +1843,47 @@ model WhoopOAuthState {
   @@map("whoop_oauth_states")
 }
 
+/// v1.12.0 — Fitbit/Pixel connection over the Google Health API. Mirrors
+/// `WhoopConnection` 1:1 per user. Tokens are encrypted at the app level
+/// before persistence. Unlike WHOOP, Google refresh tokens do not rotate per
+/// use, so `refreshToken` is overwritten only when a token response carries a
+/// fresh one.
+model FitbitConnection {
+  id             String    @id @default(cuid())
+  userId         String    @unique @map("user_id")
+  fitbitUserId   String    @map("fitbit_user_id") // Google/Fitbit external id
+  accessToken    String    @map("access_token") // encrypted at app level
+  refreshToken   String    @map("refresh_token") // encrypted at app level
+  tokenExpiresAt DateTime  @map("token_expires_at")
+  /// Space-separated OAuth scope string granted by the Google authorisation
+  /// flow. Null = legacy connection that predates scope tracking.
+  scope          String?   @map("scope")
+  lastSyncedAt   DateTime? @map("last_synced_at")
+  /// Set once the self-converging history backfill walks every collection to
+  /// completion. Null = backfill still in flight (or never started).
+  backfillCompletedAt DateTime? @map("backfill_completed_at")
+  createdAt      DateTime  @default(now()) @map("created_at")
+  updatedAt      DateTime  @updatedAt @map("updated_at")
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@map("fitbit_connections")
+}
+
+/// v1.12.0 — short-lived `(nonce → userId)` ledger backing the Fitbit OAuth
+/// state check, identical in shape + lifecycle to `WhoopOAuthState`.
+model FitbitOAuthState {
+  nonce     String   @id
+  userId    String   @map("user_id")
+  createdAt DateTime @default(now()) @map("created_at")
+  expiresAt DateTime @map("expires_at")
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@index([expiresAt])
+  @@map("fitbit_oauth_states")
+}
+
 // ─── Mood Entries (moodLog) ───────────────────────────────────
 
 model MoodEntry {
diff --git a/scripts/rotate-encryption-key.ts b/scripts/rotate-encryption-key.ts
index 92c730a50..9b14c2aab 100644
--- a/scripts/rotate-encryption-key.ts
+++ b/scripts/rotate-encryption-key.ts
@@ -102,6 +102,8 @@ async function main() {
       withingsClientSecretEncrypted: true,
       whoopClientIdEncrypted: true,
       whoopClientSecretEncrypted: true,
+      fitbitClientIdEncrypted: true,
+      fitbitClientSecretEncrypted: true,
     },
   });
 
@@ -119,6 +121,8 @@ async function main() {
     "withingsClientSecretEncrypted",
     "whoopClientIdEncrypted",
     "whoopClientSecretEncrypted",
+    "fitbitClientIdEncrypted",
+    "fitbitClientSecretEncrypted",
   ];
   for (const field of userFields) {
     const r = await rotateField(
@@ -176,6 +180,26 @@ async function main() {
     results.push(r);
   }
 
+  // ───── FitbitConnection table (accessToken / refreshToken) ─────
+  const fitbit = await prisma.fitbitConnection.findMany({
+    select: { id: true, accessToken: true, refreshToken: true },
+  });
+  for (const field of ["accessToken", "refreshToken"] as const) {
+    const r = await rotateField(
+      "FitbitConnection",
+      field,
+      fitbit,
+      (f) => f[field],
+      async (id, ciphertext) => {
+        await prisma.fitbitConnection.update({
+          where: { id },
+          data: { [field]: ciphertext } as Record<string, string>,
+        });
+      },
+    );
+    results.push(r);
+  }
+
   // ───── AppSettings table (singleton typically) ─────
   const settings = await prisma.appSettings.findMany({
     select: {
diff --git a/src/components/settings/sources-section.tsx b/src/components/settings/sources-section.tsx
index 8b524a3bb..232162404 100644
--- a/src/components/settings/sources-section.tsx
+++ b/src/components/settings/sources-section.tsx
@@ -94,6 +94,8 @@ const SOURCE_LABEL_KEYS: Record<string, string> = {
   // `recovery` ladder for native-vs-derived ordering).
   WHOOP: "settings.sections.sources.sourceLabels.WHOOP",
   COMPUTED: "settings.sections.sources.sourceLabels.COMPUTED",
+  // v1.12.0 — Fitbit/Pixel native source.
+  FITBIT: "settings.sections.sources.sourceLabels.FITBIT",
 };
 
 const DEVICE_TYPE_LABEL_KEYS: Record<DeviceType, string> = {
diff --git a/src/lib/integrations/status.ts b/src/lib/integrations/status.ts
index 40a0d8e57..126baab0c 100644
--- a/src/lib/integrations/status.ts
+++ b/src/lib/integrations/status.ts
@@ -39,7 +39,7 @@ import { auditLog } from "@/lib/auth/audit";
 import { getEvent } from "@/lib/logging/context";
 import { dispatchNotification } from "@/lib/notifications/dispatcher";
 
-export type IntegrationKey = "withings" | "whoop" | "moodlog";
+export type IntegrationKey = "withings" | "whoop" | "fitbit" | "moodlog";
 
 /**
  * Failure kinds carried into `recordSyncFailure`.
@@ -824,7 +824,9 @@ export function formatAdminAlertPayload(input: AlertInput): {
       ? "Withings"
       : input.integration === "whoop"
         ? "WHOOP"
-        : "moodLog";
+        : input.integration === "fitbit"
+          ? "Fitbit"
+          : "moodLog";
   const subjectLabel = input.subjectLabel ?? input.userId;
   const { reason: reasonLabel, action: actionLabel } =
     FAILURE_KIND_COPY[input.kind];
diff --git a/src/lib/query-keys.ts b/src/lib/query-keys.ts
index 2dffcd2eb..eb723122b 100644
--- a/src/lib/query-keys.ts
+++ b/src/lib/query-keys.ts
@@ -374,6 +374,13 @@ export const queryKeys = {
    * so a disconnect / credentials mutation invalidates both at once.
    */
   whoopStatus: () => ["whoop", "status"] as const,
+  // v1.12.0 — Fitbit/Pixel integration card, mirroring the WHOOP keys.
+  fitbit: () => ["fitbit"] as const,
+  /**
+   * Per-card Fitbit status read. Shares the `["fitbit"]` prefix with `fitbit()`
+   * so a disconnect / credentials mutation invalidates both at once.
+   */
+  fitbitStatus: () => ["fitbit", "status"] as const,
 
   // v1.4.32 — workout list + detail caches. `workouts()` is the
   // root key invalidated by the batch-ingest mutation; the recent +
diff --git a/src/lib/sources/pick-canonical-workout.ts b/src/lib/sources/pick-canonical-workout.ts
index 7ac8aa3ca..06de50099 100644
--- a/src/lib/sources/pick-canonical-workout.ts
+++ b/src/lib/sources/pick-canonical-workout.ts
@@ -94,6 +94,10 @@ export const DEFAULT_WORKOUT_SOURCE_PRIORITY: readonly MeasurementSource[] = [
   // session. The read-time picker clusters a WHOOP run and an Apple-Health
   // run by (activityType, startedAt ± window) and keeps the ladder winner.
   "WHOOP",
+  // v1.12.0 — Fitbit/Pixel exercise logs rank just below WHOOP: a wrist
+  // wearable in the same class, the next-best when no watch logged the same
+  // session.
+  "FITBIT",
   "WITHINGS",
   "MANUAL",
   "IMPORT",
diff --git a/src/lib/validations/__tests__/source-priority.test.ts b/src/lib/validations/__tests__/source-priority.test.ts
index 9d36249f1..a8953d8ca 100644
--- a/src/lib/validations/__tests__/source-priority.test.ts
+++ b/src/lib/validations/__tests__/source-priority.test.ts
@@ -102,7 +102,7 @@ describe("sourcePrioritySchema", () => {
 
   it("rejects an unknown source string", () => {
     const result = sourcePrioritySchema.safeParse({
-      weight: ["FITBIT", "WITHINGS"],
+      weight: ["GARMIN", "WITHINGS"],
     });
     expect(result.success).toBe(false);
   });
diff --git a/src/lib/validations/measurement.ts b/src/lib/validations/measurement.ts
index be483d776..595826da8 100644
--- a/src/lib/validations/measurement.ts
+++ b/src/lib/validations/measurement.ts
@@ -129,6 +129,10 @@ export const measurementSourceEnum = z.enum([
   // client write path). Part of this enum so the read/response shapes (and
   // the iOS decoder) can decode the rows it surfaces.
   "WHOOP",
+  // v1.12.0 — Fitbit/Pixel integration via the Google Health API. Server-owned
+  // (no client write path), exactly like WHOOP. Part of this enum so the
+  // read/response shapes (and the iOS decoder) can decode the rows it surfaces.
+  "FITBIT",
 ]);
 
 /**
diff --git a/src/lib/validations/source-priority.ts b/src/lib/validations/source-priority.ts
index d10b90a38..8011840ff 100644
--- a/src/lib/validations/source-priority.ts
+++ b/src/lib/validations/source-priority.ts
@@ -214,29 +214,35 @@ export type DeviceTypePriority = z.infer<typeof deviceTypePrioritySchema>;
  *     receives the same reading via Withings' Health Mate iOS app).
  */
 export const DEFAULT_SOURCE_PRIORITY: Required<MetricPriority> = {
-  steps: ["APPLE_HEALTH", "WITHINGS", "MANUAL"],
-  activeEnergy: ["APPLE_HEALTH", "WITHINGS", "MANUAL"],
-  walkingRunningDistance: ["APPLE_HEALTH", "WITHINGS", "MANUAL"],
-  flightsClimbed: ["APPLE_HEALTH", "WITHINGS", "MANUAL"],
+  // v1.12.0 — Fitbit/Pixel rides below Apple Health for cumulative metrics:
+  // HealthKit still aggregates the broadest device set, and a Fitbit-only
+  // self-hoster has no Apple stream to compete with anyway.
+  steps: ["APPLE_HEALTH", "WITHINGS", "FITBIT", "MANUAL"],
+  activeEnergy: ["APPLE_HEALTH", "WITHINGS", "FITBIT", "MANUAL"],
+  walkingRunningDistance: ["APPLE_HEALTH", "WITHINGS", "FITBIT", "MANUAL"],
+  flightsClimbed: ["APPLE_HEALTH", "WITHINGS", "FITBIT", "MANUAL"],
   // v1.11.0 — WHOOP leads the recovery-input ladders (sleep / HRV / RHR):
   // a worn-all-night strap has higher-resolution overnight sampling than
   // the iPhone-relayed HealthKit summary or the Withings nightly summary.
-  sleep: ["WHOOP", "APPLE_HEALTH", "WITHINGS"],
-  hrv: ["WHOOP", "APPLE_HEALTH", "WITHINGS"],
-  restingHeartRate: ["WHOOP", "APPLE_HEALTH", "WITHINGS"],
+  // v1.12.0 — Fitbit is a wrist wearable in the same class as WHOOP but with
+  // a lower-fidelity nightly estimate, so it ranks just below it.
+  sleep: ["WHOOP", "FITBIT", "APPLE_HEALTH", "WITHINGS"],
+  hrv: ["WHOOP", "FITBIT", "APPLE_HEALTH", "WITHINGS"],
+  restingHeartRate: ["WHOOP", "FITBIT", "APPLE_HEALTH", "WITHINGS"],
   // A real scale beats a strap's body-measurement estimate for weight.
-  weight: ["WITHINGS", "APPLE_HEALTH", "MANUAL", "WHOOP"],
+  weight: ["WITHINGS", "APPLE_HEALTH", "MANUAL", "WHOOP", "FITBIT"],
   bloodPressure: ["WITHINGS", "APPLE_HEALTH", "MANUAL"],
-  pulse: ["WITHINGS", "APPLE_HEALTH", "MANUAL"],
-  bodyFat: ["WITHINGS", "APPLE_HEALTH", "MANUAL"],
-  bodyTemperature: ["WITHINGS", "APPLE_HEALTH", "MANUAL"],
-  // Withings ScanWatch pulse-ox is the primary SpO2 sensor; WHOOP second.
-  spo2: ["WITHINGS", "WHOOP", "APPLE_HEALTH", "MANUAL"],
-  vo2Max: ["WITHINGS", "APPLE_HEALTH", "MANUAL"],
+  pulse: ["WITHINGS", "APPLE_HEALTH", "MANUAL", "FITBIT"],
+  bodyFat: ["WITHINGS", "APPLE_HEALTH", "MANUAL", "FITBIT"],
+  bodyTemperature: ["WITHINGS", "APPLE_HEALTH", "MANUAL", "FITBIT"],
+  // Withings ScanWatch pulse-ox is the primary SpO2 sensor; WHOOP second,
+  // Fitbit third.
+  spo2: ["WITHINGS", "WHOOP", "FITBIT", "APPLE_HEALTH", "MANUAL"],
+  vo2Max: ["WITHINGS", "APPLE_HEALTH", "FITBIT", "MANUAL"],
   // v1.11.0 — new WHOOP-overlapping keys. ScanWatch dermal reading is the
-  // primary skin-temperature sensor; WHOOP's strap is second.
-  skinTemperature: ["WITHINGS", "WHOOP", "APPLE_HEALTH"],
-  respiratoryRate: ["WHOOP", "APPLE_HEALTH", "WITHINGS"],
+  // primary skin-temperature sensor; WHOOP's strap is second, Fitbit third.
+  skinTemperature: ["WITHINGS", "WHOOP", "FITBIT", "APPLE_HEALTH"],
+  respiratoryRate: ["WHOOP", "FITBIT", "APPLE_HEALTH", "WITHINGS"],
   // v1.11.0 — native-vs-derived recovery. WHOOP's device-native Recovery
   // outranks HealthLog's COMPUTED proxy when both exist; the proxy is the
   // fallback for users without a strap.