Automatic background sync
HealthKit change delivery, hourly or daily scheduled catch-up, and a sync when you open the app.
HealthSyncFreeiPhone app · Open source under Apache-2.0
Your Apple Health data, synced to your own API.
HealthSync reads the HealthKit data you choose on your iPhone and keeps it in sync with a private backend, so your dashboards, databases, and AI agents always have fresh health data, without handing it to a third-party cloud.
- No analytics
- Read-only access
- Self-host or hosted
180+Apple Health data types
11Health categories
0Analytics or third-party SDKs
FreeOn the App Store
How it works
From your wrist to your database, automatically.
Apple does not offer a cloud API for Health data. HealthSync is the missing bridge: it runs on your iPhone, where the data lives, and delivers it to an endpoint you own.
- Step 1
Apple Health
You grant read-only HealthKit access for the exact data types you want.
- Step 2
HealthSync on iPhone
New and deleted samples are normalized to JSON and queued safely in local storage.
- Step 3
Your API
Batches upload over HTTPS to your backend or a private hosted workspace.
- Step 4
Your tools
Dashboards, data warehouses, and AI agents read from a source you control.
Features
Set it up once. It keeps your data current.
HealthSync handles HealthKit permissions, background delivery, retries, and deletions so you can focus on what you build with the data.
Backfill any date range
Pull historical Apple Health data for any range, or re-sync the last 24 hours with one tap.
Retry-safe upload queue
Failed uploads stay queued on the device. Deterministic record IDs make retries duplicate-free.
Edits and deletions sync too
When a sample is deleted in Apple Health, HealthSync sends the deletion so your copy stays accurate.
Self-host or go hosted
Start instantly with a private hosted workspace, or point the app at your own FastAPI and Postgres stack.
Built for AI agents
Hosted workspaces include a read-only agent endpoint with daily summaries designed for LLM tools.
What syncs
180+ Apple Health types. You pick which ones.
Toggle categories or individual types in the app. HealthSync only requests read permission for what you enable, and you can change it any time.
See how data is exported- ActivitySteps, distance, active energy, exercise minutes
- HeartHeart rate, resting HR, HRV, VO2 max, blood pressure
- Sleep & MindfulnessSleep stages, mindful minutes
- BodyWeight, body fat, BMI, lean mass, wrist temperature
- WorkoutsType, duration, energy, distance, heart rate, effort
- NutritionCalories, macros, water, vitamins, minerals
- RespiratoryRespiratory rate, blood oxygen, lung function
- MobilityWalking steadiness, gait, stair speed
- Hearing & EnvironmentAudio exposure, daylight, UV
- ClinicalBlood glucose, insulin, alcohol
- Reproductive HealthCycle tracking and related records
- Symptoms & EventsSymptoms, hygiene, and other events
Use cases
Made for people who want their data working for them.
Personal dashboards
Feed Grafana, Metabase, or a custom app with live Apple Health data stored in your own Postgres.
AI health assistants
Give an agent a scoped, read-only token to your health history instead of uploading export files.
Quantified-self archives
Keep a durable, queryable copy of years of health data without manual Apple Health exports.
Developer prototypes
Build on real HealthKit data without writing and shipping your own iOS sync layer.
For developers
A simple, documented JSON contract.
Every batch is a single authenticated POST with metrics, workouts, and deletions. Record IDs are stable, so your backend can upsert safely on every retry.
- Bearer-token auth with per-device headers
- Deterministic
healthkit:{uuid}IDs - Open-source FastAPI + Postgres backend
- Read-only agent endpoint with daily summaries
POST /api/apple-health/sync
Authorization: Bearer ••••••••
{
"schema_version": 2,
"device_id": "3F2A…",
"export_id": "b1c4…",
"timezone": "Europe/Berlin",
"metrics": [
{
"id": "healthkit:9E1D…",
"type": "step_count",
"value": 1243,
"unit": "count",
"start_at": "2026-10-16T08:00:00Z",
"end_at": "2026-10-16T09:00:00Z"
}
],
"workouts": [ … ],
"deletions": [ … ]
}Privacy
Private by design, not by promise.
Your Apple Health data stays on your iPhone until you choose to sync it, and then it goes only where you point it. This website never reads or accesses it.
Read the privacy policyRead-only HealthKit access
HealthSync never writes to Apple Health and only reads the types you enable.
No analytics in the app
No tracking, telemetry, ad SDKs, or third-party health SDKs. Nothing phones home.
Tokens live in the Keychain
Backend and agent tokens are stored in the iOS Keychain and never written to logs.
Open source
The app and backend are Apache-2.0 licensed, so you can audit exactly what is sent.
Get started
Syncing in under a minute.
- 1
Download HealthSync
Install the free app from the App Store on your iPhone.
- 2
Pick a destination
Tap Continue for a private hosted workspace, or enter your own backend URL and token.
- 3
Choose data and sync
Enable the Apple Health types you want, then sync the last 24 hours or backfill history.
Where can I download HealthSync?
HealthSync is available from the App Store for iPhone.
Is HealthSync free?
Yes. HealthSync is free to download from the App Store, and the source code is open under Apache-2.0.
Will this website read my Apple Health data?
No. Apple Health permissions are handled inside the iOS app, and this website never reads or stores your Apple Health data.
Can I choose what HealthSync syncs?
Yes. HealthSync lets you choose the health data types and sync timing from inside the iOS app.
Do I need my own server?
No. By default HealthSync creates a private hosted workspace for you. You can switch to your own backend at any time in Settings.
How often does HealthSync sync in the background?
You can choose hourly, daily, or manual. iOS decides exactly when background work runs, so scheduled syncs are best-effort; manual sync and backfill always run immediately.
Own your Apple Health data.
Free on the App Store. Set up in less than a minute.