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Google Health Connect lets compatible Android health and fitness apps exchange selected records through a shared, on-device data store. Each app connects through the Health Connect API, and you grant read or write access separately for that app and each data type. Health Connect does not automatically broadcast every new record to every app, and it does not make every app a cloud backup. Apps decide when to read, write and synchronize their own copies of the data.
The practical result is a controlled intermediary: a running app can contribute records, another can request permission to read them, and you can inspect or revoke those permissions in Health Connect. Background access, older records and some native tracking features have additional rules.
What is Health Connect, and why does it matter?
Health Connect is an Android component that provides a common store and API for health and fitness records. Instead of every app building a separate connector for every other app, a participating app uses the Health Connect client to access standardized records on the device.
The store is shared, but access is not open by default. Android Developers describes the model this way: “Health Connect requires you to request the user’s permission to read and write their health and fitness data on a per-app basis.” A running app can therefore see only the record types for which you approved access, and it can write only the types for which it has write permission.
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Health Connect itself is not an app-to-app messaging bus or an automatic cloud account. An app may upload its own data to a server under its separate privacy policy, but Health Connect does not silently send every stored record to every connected service.
How does data move from one app to another?
The normal path has five stages. Apps can perform these operations in different ways, but the permissions and shared-store model remain the same.
- The app declares its needs. A developer selects the Health Connect record types the app can use, such as activity, sleep or nutrition records.
- The app connects through the Health Connect client and API. It uses the standard record operations exposed by Health Connect rather than a private connection to another app.
- You answer a permission request. Health Connect presents the requested read and write permissions. You can approve some types, deny others or refuse the request entirely.
- The app reads or writes records. With permission, it can insert records, update its permitted records, read records and delete records according to the API rules and its implementation.
- The app synchronizes its own view. The app decides when to query Health Connect and how to update its interface, local database or online service. That last step is controlled by the app, not pushed automatically by Health Connect.
Health Connect also provides change information so a client can identify records inserted or deleted by another app. The client still has to request that information and process it; simply installing two compatible apps does not create an automatic feed between them.
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Which kinds of health data can Health Connect store?
Health Connect supports a broad set of standardized categories. The exact fields, units and required values are defined by each record schema. A category being available in Health Connect does not mean that every app reads or writes it.
| Category | What it covers | What to check |
|---|---|---|
| Activity | Movement and exercise-related records, including supported activity measurements | Whether the app supports the specific activity record and its units |
| Body measurements | Measurements such as weight or other body metrics represented by supported schemas | Whether the app requests the matching measurement type |
| Cycle tracking | Supported menstrual-cycle and related tracking records | Whether the app implements the relevant cycle fields |
| Nutrition | Food and nutrition records supported by the API | Which nutrients, meals or portions the app can interpret |
| Sleep | Sleep sessions and related interval data | Whether the app handles interval records and sleep stages |
| Vitals | Supported vital-sign records | Whether the app supports the particular vital and unit |
| Wellness | Other supported wellness records | The app’s declared data types and read/write directions |
| Medical records | Supported medical-record schemas | App support, schema requirements and the permissions requested |
Records can be instantaneous or cover an interval, and schemas can require particular fields and units. Treat an app’s permission screen and documentation as the authoritative list of what it actually supports; Health Connect’s full catalog is not a promise that the app will import every category.
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How do Health Connect permissions work?
Permissions are scoped to both the app and the data type. Read access and write access are separate decisions, so an app that can contribute a record does not automatically gain the ability to inspect records written by other apps.
Read and write approval
An app requests the data types it needs. You can grant the request, deny it or later change the decision. The app should check the current permission state before every operation that depends on access, because a user can revoke permission after setup.
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Background reads
Reading while the app is not in use requires an additional background-read permission. An app that only reads when you open it may not need this extra access, while an app that maintains a background dashboard or scheduled import may request it. Granting ordinary foreground read permission does not by itself authorize background reads.
Historical reads older than 30 days
Health Connect treats records older than 30 days separately. An app that needs to import history beyond that threshold must declare and receive the separate historical-read permission. Without it, the app may be limited to the more recent data allowed by its normal permissions.
Revoking access
Health Connect’s permission controls let you remove an app’s read or write access without disabling other apps. After a revocation, the app must handle the denied state rather than assuming that a previous grant still exists.
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Does Health Connect sync data in real time?
No. Synchronization timing is app-managed, and Android’s documentation says an app cannot be notified when new data arrives. A well-designed client checks for changes when it becomes active and may check periodically while it is in the foreground; it should not promise instant updates merely because both apps use Health Connect.
Change tokens and expiration
For incremental synchronization, an app can use change information to find inserted or deleted records since its last successful check. An unused Changes token expires within 30 days. A client therefore needs a recovery path instead of treating an expired token as a permanent data-loss event.
Interrupted reads
Large reads can be interrupted. The app should save enough progress to resume later, retry safely and avoid presenting a partial import as complete. If its token has expired, a practical recovery is to reread records from a known time boundary and deduplicate them against the records already stored by the app.
What users should expect
- A record written by one app may not appear in another until that other app checks Health Connect.
- Closing, background restrictions or infrequent polling can delay an app’s displayed data.
- Different apps can show different totals if they support different record types, time ranges or deduplication rules.
How is native Health Connect tracking different from app-written data?
Health Connect can provide on-device tracking for steps, distance and active calories. This capability starts tracking a type only after an app requests and receives read permission for that type. You can disable the capability in Health Connect settings.
That native feature is distinct from a wearable, phone sensor or fitness app writing records into the store. A device or app may remain the upstream source, while Health Connect supplies the shared record layer. Enabling native tracking does not mean that every app automatically receives the resulting data; each app still needs the appropriate permission and must read it.
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Which Android devices support Health Connect?
The official availability requirements are a mobile device running Android 9 (API level 28) or later with Google Play services. The delivery method depends on the Android release.
| Android version | How Health Connect is delivered | Important limitation |
|---|---|---|
| Android 14 and later | Included with Android and exposed through the system Settings experience | Manufacturer menus can label or place the entry differently |
| Android 13 and earlier | Provided as an app installed through Google Play | The device still needs Google Play services |
| Work profiles | Not supported for Health Connect API use | Use a supported personal profile instead |
These requirements describe platform availability, not app compatibility. An individual app can still restrict the Android versions, record types or account features it supports.
How do you connect two apps through Health Connect?
Use the following sequence when an app advertises Health Connect support.
- Confirm the platform. Check that the phone runs Android 9 or newer, has Google Play services and is not using a work profile for the API connection.
- Open Health Connect. On Android 14 or newer, launch it from the phone’s Settings; on Android 13 or older, install or update the Health Connect app from Google Play.
- Start setup in the participating app. Look for its Health Connect, connected apps or data-sharing control. The app should show the record types and access directions it wants.
- Review each permission. Grant only the read and write types that match the app’s purpose. If it needs background or older-than-30-day data, review those separate requests carefully.
- Check the result in Health Connect. Use its app and data controls to confirm what was granted. If the app has no records yet, make sure a source app has actually written the relevant type.
- Open the destination app and trigger a refresh. Because synchronization is app-managed, opening the app or using its refresh/import control may be necessary before new records appear.
Menu names can vary by phone manufacturer and Android release. The permission screen in Health Connect is the definitive place to verify the current grant.
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| Symptom | Likely cause | What to do |
|---|---|---|
| The destination app shows nothing | It lacks read permission, the source has not written that type, or the app has not checked yet | Review the app’s read permission, confirm the source record exists and open or refresh the destination app |
| Recent records appear but old history does not | The app lacks historical-read permission for data older than 30 days | Grant that separate permission if the app genuinely needs the older range |
| Background totals stop updating | Background-read access was not granted, or the app checks only while active | Review background permission and the app’s own sync settings |
| Import stops partway through | A read was interrupted or the incremental token expired | Let the app resume; if required, use its recovery process to reread from a known time and deduplicate |
| A requested category is absent | The app does not implement that Health Connect record type | Check the app’s declared support instead of assuming the full Health Connect catalog is available |
| Native steps, distance or calories are not present | On-device tracking is disabled or no app has requested and received the required read permission | Check the native tracking control and the requesting app’s permission |
| Health Connect cannot be enabled in a managed profile | Work profiles are not supported for API use | Use a supported personal Android profile |
How should you judge an app’s Health Connect implementation?
Two apps can both advertise Health Connect support while behaving very differently. Compare the details that affect data completeness and delay.
| Question | Why it matters |
|---|---|
| Which record types can it read and write? | Support for Health Connect does not imply support for every category or field. |
| Does it read only in the foreground or also in the background? | Foreground-only apps may not update until you open them; background use needs an extra permission. |
| Can it import records older than 30 days? | Historical imports require a separate permission and an implementation that uses it. |
| How does it handle interruptions and expired change tokens? | Recovery and deduplication determine whether a long-running import stays complete. |
| Are permissions and refresh controls visible? | Clear controls make it easier to diagnose missing or stale data. |
This framework is more useful than assuming that two apps will show identical totals. Their schemas, time windows, polling schedules and duplicate-handling rules can all differ.
What control do you retain as the user?
You decide which app can read or write which data types, whether an app receives background or historical access, and whether native step, distance or active-calorie tracking remains enabled. Those choices are managed through Health Connect’s own controls, not solely through the individual app’s settings.
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Frequently Asked Questions
Why does an app still show no data after I granted Health Connect access?
Permission only allows the requested record types; it does not create records that no source has written. Confirm that the source app produced the exact type the destination reads, then open or refresh the destination so it performs its own synchronization check.
Can I disable one app without disconnecting all my health apps?
Yes. Health Connect permissions are scoped per app and data type, so you can revoke a particular app’s read or write access while leaving other grants unchanged. The affected app must then handle the revoked state.
Does Health Connect replace the app that came with my fitness tracker?
No. A tracker or its companion app can remain the upstream recorder, while Health Connect provides a common on-device store for other permitted apps. The companion app may still be needed to collect or interpret the device’s measurements.
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Why can two apps show different step or calorie totals?
They may read different record types, time ranges or sources, and each app can apply its own synchronization and deduplication rules. Health Connect standardizes access to records; it does not require every app to calculate identical summaries.
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