Introduction
Apple Health launched in 2014 and became the central repository for health data on iOS. Fitbit, MyFitnessPal, Strava, and hundreds of other apps fed data into it. Android had no equivalent — health data was siloed in individual apps with no cross-app sharing.
Health Connect, launched as a standalone app in 2022 and built into Android 14 (2023), is Android’s answer. It’s a centralized health data platform that aggregates data from multiple apps and devices, with user-controlled sharing and on-device encryption.
How It Works
Health Connect is a system service that stores health and fitness data in a single on-device database. Apps can read and write data through the Health Connect API, with per-category user permission.
Supported data types:
- Activity: Steps, calories, distance, exercise sessions
- Body: Weight, height, body fat, BMI
- Sleep: Duration, stages, schedule
- Vitals: Heart rate, blood pressure, blood glucose, oxygen saturation
- Nutrition: Calories consumed, macros, water intake
- Menstrual health: Cycle tracking, symptoms
Users control which apps can read and write each data type. All data is stored on-device with encryption. Google cannot access the data.
The Ecosystem
Health Connect integrates with Fitbit (Google-owned), Samsung Health, MyFitnessPal, Oura, Withings, Peloton, Strava, and others. The API is open to any developer.
The built-in integration in Android 14 (Settings → Health Connect) makes it more discoverable than the standalone app. Combined with the Pixel Watch and Fitbit, Android’s health ecosystem is finally competitive with Apple’s.
The Privacy Model
Health Connect’s privacy model is user-centric:
- On-device storage: All data stays on the device. No cloud sync unless the user opts in.
- Granular permissions: Users grant per-category read/write access to each app.
- Revocable: Permissions can be revoked at any time.
- Transparency: Users can see which apps accessed which data and when.
References
- Health Connect launch (Google I/O 2022)
- Health Connect API documentation (developer.android.com)
- Android 14 Health Connect built-in integration