health4ai
Your health data, your AI
Free · Designed for iPad. Not verified for macOS.
health4ai moves the health data on your iPhone into a Google Sheet or a database you own, so you and any AI assistant can work with it.
The Health app holds years of your sleep, HRV, heart rate, workouts and 150+ other metrics, but nothing outside your iPhone can read it. health4ai is the bridge.
TWO WAYS TO SAVE
Google Sheets: sign in with Google and health4ai writes one row per day (steps, sleep, heart rate, HRV, workouts and more) into a spreadsheet in your own Google Drive. No setup beyond signing in. health4ai can only see the files it creates.
Your own database: sync every HealthKit sample into a Postgres database you control, typically a free Supabase project, and any MCP-compatible AI client can then query it in plain language. A setup checklist in the app shows which steps are done, and setup takes about ten minutes.
There is no health4ai account and no health4ai server either way.
NOT JUST APPLE WATCH
health4ai syncs anything that writes to the Health app. That includes rings, watches, scales, blood pressure cuffs, glucose monitors and workout and nutrition apps, for example Oura, Garmin, Polar, Coros, Withings, Omron, Dexcom, Strava, Peloton, MyFitnessPal and Cronometer. Coverage depends on what each brand shares with the Health app. The Your Sources screen shows every device and app that has sent data.
WHAT IT DOES
Syncs sleep stages, HRV, resting and walking heart rate, steps, distance, workouts, active energy, VO2 max, respiratory rate, body mass and more.
Syncs each time you open the app, and in the background as often as iOS allows. Sync History shows every run, so you never have to wonder.
Backfills your history too, not just today.
Tells you plainly when a metric is not being shared with the app, instead of showing you an empty chart and calling it complete.
YOUR DATA STAYS YOURS
health4ai never receives, stores or transmits your health data. It travels from your iPhone to your spreadsheet or your database and nowhere else. No analytics on your health data, no advertising, no third-party sharing, no resale. The iOS app and the companion MCP server are both open source under the MIT license, so you can read exactly what they do.
WORKS WITH ANY AI
Any AI client that speaks the Model Context Protocol, through the companion open-source MCP server (pip install health4ai). The app's Connect Your AI screen gives you copy-paste setup for Claude Desktop, Claude Code and Cursor. Purpose-built tools cover daily snapshots, trends, baselines, sleep, workouts and search across your records.
FREE
No subscription, no in-app purchases, no account, no upsell.
Ratings & Reviews
- Fixes a first Google Sheets sync that said "No health data found" for some people who do have Health data. The sync now continues past an empty stretch of history to the first day with data, and it looks at every kind of data the sheet uses (not only steps, heart rate, sleep and workouts) when deciding where your history begins.
- Sync History now records which days were checked when no data is found, so support can see what happened.
The developer, Jeff Littell, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jeff Littell
- Size
- 1.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 Jeff Littell