Availability depends on your device (for example Apple Watch), iOS version, the apps that write to Apple Health, and the permissions you grant. Only types you allow are read. The full, current list is shown in the app.
| Category | Examples of data types |
|---|---|
| Activity | Steps, walking + running distance, cycling distance, flights climbed, active energy, resting energy, exercise minutes, stand time |
| Sleep | Sleep analysis: time asleep, in bed, awake, core, deep and REM stages |
| Heart | Heart rate, resting heart rate, walking heart rate average, heart rate variability (HRV), cardio fitness (VO₂ max), ECG (if you choose to sync) |
| Respiratory & vitals | Blood oxygen, respiratory rate, blood pressure, body temperature |
| Body measurements | Weight, height, BMI, body-fat percentage, lean body mass, waist circumference |
| Workouts | Workout type, duration, distance, energy burned |
| Nutrition | Dietary energy, protein, carbohydrates, fat, sugar, fiber, water, caffeine and more |
| Mobility | Walking speed, step length, walking asymmetry, double support time |
| Mindfulness & mental wellbeing | Mindful minutes, state of mind |
| Cycle tracking | Menstrual data (if you choose to sync) |
| Symptoms & other | Logged symptoms, blood glucose, health profile, and more |
How the data is prepared
Health to AI summarizes records on your iPhone or iPad — daily or hourly depending on the type — before encrypting and syncing them. Summaries are easier for AI to reason about than millions of raw samples, and keep each request small and fast. Each record keeps its date, unit, source and sync time.
You can change your mind
Turn data types on or off at any time. Stopping a type stops future syncs; to remove cloud data entirely, use Settings → Delete account & cloud data. Your original Apple Health data is never changed.
Frequently asked questions
Does Health to AI work without an Apple Watch?
Yes. iPhone records data like steps, distance and flights climbed on its own, and other apps can write data to Apple Health. An Apple Watch adds data such as heart rate, HRV and sleep stages.
Does it support data from third-party apps?
If another app or device writes data to Apple Health and you grant permission for that type, Health to AI can include it.
Does Health to AI write data to Apple Health?
No. It only reads the types you permit.
