HealthLog
Self-hosted, privacy-first health tracking. Your vitals, your devices, your server.
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## Why HealthLog
HealthLog is a self-hosted health tracking app (PWA + native iOS client) that runs from a single `docker compose up` on a NAS, homelab, or small VPS. It brings weight, blood pressure, pulse, blood glucose, body composition, sleep, mood, menstrual cycle, and medications onto one timeline — synced from the devices you already own — and keeps everything encrypted at rest on hardware you control. No vendor cloud, no subscription, no telemetry.
Try the [live demo](https://demo.healthlog.dev) to see a working install — sign in with `demo` / `demo123demo123`.
## Highlights
- **Every vital on one timeline.** Weight, blood pressure, pulse, glucose, body composition, sleep, SpO₂, mood, and cycle tracking — charted with trends, moving averages, and clinical reference ranges (ESH 2023, ADA 2024), overridable with the targets your clinician set.
- **Your devices, one server.** Withings, WHOOP, Oura and Polar sync over OAuth2, Fitbit connects experimentally over the Fitbit Web API, an Apple Health `export.zip` folds your full history in, and the native iOS app streams HealthKit live. A per-metric source priority decides which reading is canonical when wearables overlap.
- **Medication tracking that tells the truth.** Flexible schedules (weekly injections, weekday-only, intervals, PRN, cyclic), a configurable intake window per dose, and a traceable dose history where every slot reads taken, late, skipped, or missed — the same ledger the compliance rate is computed from, so the percentage can never disagree with the timeline.
- **AI insights you own.** Daily briefing, health scores, correlations, and a conversational coach grounded in your own measurements, with proactive check-ins. Bring your own OpenAI or Anthropic key, or point at a local endpoint (Ollama, LM Studio, vLLM) so nothing leaves your network.
- **Clinician-ready output.** A doctor-report PDF generated client-side, a read-only HL7 FHIR R4 API, and scoped, time-limited share links you revoke after the visit.
- **Private by construction.** AES-256-GCM encryption at rest with zero-downtime key rotation, passkey login, server-side sessions, strict CSP — and no third-party tracking anywhere.
- **Built to be lived in.** Installable PWA with offline support, medication reminders over APNs, Telegram, ntfy, and Web Push, a sub-second dashboard on years of imported history, English and German end to end.
The full feature tour, integration guides, and API reference live at [docs.healthlog.dev](https://docs.healthlog.dev).
## Quick start (Docker Compose)
```bash
git clone https://github.com/MBombeck/HealthLog.git && cd HealthLog
cp .env.example .env
# Generate the three secrets (each a 64-char hex string = 32 bytes):
echo "POSTGRES_PASSWORD=$(openssl rand -hex 32)" >> .env
echo "ENCRYPTION_KEY=$(openssl rand -hex 32)" >> .env
echo "API_TOKEN_HMAC_KEY=$(openssl rand -hex 32)" >> .env
# LAN / plain-HTTP host (NAS, homelab, Tailscale) — required, or login fails:
echo "SESSION_COOKIE_SECURE=false" >> .env
docker compose up -d
```
Open **http://localhost:3000** (or `http://:3000`) — the first registered user becomes admin. The compose file pulls a pre-built multi-arch image (`amd64` + `arm64`) from [GHCR](https://github.com/MBombeck/HealthLog/pkgs/container/healthlog); no build step required.
Verify the running version:
```bash
curl -s http://localhost:3000/api/version # returns version + buildSha + builtAt
```
`SESSION_COOKIE_SECURE=false` is the one setting plain-HTTP self-hosts must set: without it the session cookie carries the `Secure` flag, the browser drops it over HTTP, and login silently fails. Leave it unset (or `true`) only when a TLS reverse proxy serves HTTPS — and then set `NEXT_PUBLIC_APP_URL` and `APP_URL` to the public URL first (see the [self-hosting guide](https://docs.healthlog.dev/self-hosting/)).
Persistent state lives in exactly one named volume (`pgdata`, the Postgres data dir); the app container is stateless, so backing up the database backs up everything.
NAS and homelab users have ready-made paths: [Unraid Community Applications](docs/self-hosting/unraid.md) and [Portainer app templates](docs/self-hosting/portainer/README.md).
## Self-hosting
One container hosts both the web server and the job worker by default; split them via `HEALTHLOG_PROCESS_TYPE=web|worker` for horizontal scale. Encrypted daily backups to any S3-compatible bucket are opt-in via the admin panel, new users join by invite link or QR code, and the stack works out of the box behind Caddy, Traefik, Nginx, or [Coolify](https://coolify.io/).
HealthLog ships releases roughly weekly. Pin a tag, back up before upgrades, and skim the [CHANGELOG](CHANGELOG.md) before pulling `latest`. The operator manual — reverse proxy, migrations, encryption-key rotation, backup and restore — lives at [docs.healthlog.dev](https://docs.healthlog.dev).
## Native iOS app
A SwiftUI companion in public beta via [TestFlight](https://testflight.apple.com/join/bucuTBpa), built on the same API as the web client: live HealthKit two-way sync, medication reminders with action buttons that work without opening the app, and an on-device coach on Apple-Intelligence-capable iPhones. Code lives in [MBombeck/healthlog-iOS](https://github.com/MBombeck/healthlog-iOS).
## Tech stack
Next.js 16 (App Router, React Server Components), TypeScript strict, PostgreSQL 16 with Prisma, pg-boss for jobs, Tailwind CSS 4 + shadcn/ui, Recharts, WebAuthn passkeys, Vitest + Playwright, multi-stage Alpine Docker image. The OpenAPI 3.1 contract for native clients is generated from the Zod schemas at [`docs/api/openapi.yaml`](docs/api/openapi.yaml).
## Documentation
| | |
| ---------------------- | ------------------------------------------------ |
| User and operator docs | [docs.healthlog.dev](https://docs.healthlog.dev) |
| Release history | [CHANGELOG.md](CHANGELOG.md) |
| API contract | [`docs/api/openapi.yaml`](docs/api/openapi.yaml) |
| Security policy | [SECURITY.md](SECURITY.md) |
| Contributing | [CONTRIBUTING.md](CONTRIBUTING.md) |
## Status
Actively developed — new releases roughly weekly, issue reports and PRs welcome. Behaviour and schema can change between versions; migrations are forward-only.
## License
HealthLog is licensed under the [PolyForm Noncommercial License 1.0.0](LICENSE): free to use, self-host, and modify for noncommercial purposes. Commercial use requires a separate agreement — open an issue or reach out via [healthlog.dev](https://healthlog.dev). Releases up to and including v1.15.18 were published under AGPL-3.0 and remain available under that license.
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