> [!WARNING]
> **Warning:** The Google Fit APIs, including the Google Fit REST API, will be deprecated in 2026. As of May 1, 2024, developers cannot sign up to use these APIs. We recommend migrating to the [Google Health API](https://developers.google.com/health) for cloud-based integrations or [Health Connect](https://developer.android.com/health-and-fitness/health-connect) for step tracking and mobile-first Android apps. For instructions on which API or platform to migrate to, see the [Fit migration guide](https://developer.android.com/health-and-fitness/health-connect/migration/fit).

Google Fit is an open ecosystem. It lets developers upload health and wellness
data to a central repository where users can access their data from different
devices and apps in one location. They can still access their data if they
upgrade to a new device.

Your health and wellness app can store data from any wearable or sensor, and
access data created by other apps.

> [!NOTE]
> **Note:** The Google Fit app uses the Google Fit platform, which is included in Google Play services. Your app can use this platform without needing users to install the Google Fit app.

Read the [Google Fit Developer and User Data Policy](https://developers.google.com/fit/policy) thoroughly and
make sure your app complies with it. Carefully review the [Google Fit Terms and
Conditions](https://developers.google.com/fit/terms) before using Google Fit. By using the API, you agree to
the Google Fit Terms and Conditions.

## Components

Google Fit consists of the following components:
![](https://developers.google.com/static/fit/images/arch-gen.png) **Figure 1**: Platform overview.

The fitness store
:   A central repository that stores data from a variety of devices and apps. The
    fitness store is a cloud service that is transparent to clients.

The sensor framework
:   A set of high-level representations that make it easy to work with the fitness
    store. You use these representations with the Google Fit APIs.

Permissions and user controls
:   A set of authorization scopes to request user permission to work with health
    and wellness data. Google Fit requires user consent to access health and
    wellness data.

Google Fit APIs
:   Android and REST APIs to access the fitness store. You can create apps that
    support Google Fit on multiple platforms and devices, such as Android, iOS, and
    Web apps.

## The fitness store

The fitness store is a cloud service that persists health and wellness data
using Google's infrastructure. Apps on different platforms and devices can store
data and access data created by other apps. Google Fit provides a set of APIs
that make it easy to insert data and query the fitness store.

## The sensor framework

The sensor framework defines high-level representations for sensors,
data types, data points, and sessions. These representations make it easy to
work with the fitness store on any platform.

Data Sources
:   Data sources represent sensors and consist of a name, the type of data
    collected, and other sensor details. A data source may represent a hardware
    sensor or a software sensor. You can define software sensors in your apps.

Data Types
:   Data types represent different kinds of health and wellness data, like step
    count or heart rate. Data types establish a schema through which different apps
    can understand each other's data. A data type consists of a name and an ordered
    list of fields, where each field represents a dimension. For example, a data
    type for location contains three fields (latitude, longitude, and accuracy),
    whereas a data type for weight contains only one field.

Data Points
:   Data points consist of a timestamped array of values for a data type, read
    from a data source. You use data points to record and insert health and wellness
    data in the fitness store, and to read raw data from a data source. Points that
    contain a start time represent a time range instead of an instantaneous reading.

Datasets
:   Datasets represent a set of data points of the same type from a particular
    data source covering some time interval. You use datasets to insert data into
    the fitness store. Queries to read data from the fitness store also return
    datasets.

Sessions
:   Sessions represent a time interval during which users perform a fitness
    activity, such as a run, a bike ride, and so on. Sessions help organize data and
    perform detailed or aggregate queries on the fitness store for a fitness
    activity.

## Permissions and user controls

Google Fit requires user consent before apps can read or store health and
wellness data. Google Fit defines OAuth scopes that map to a number of
permission groups with separate read and write privileges: activity, body,
location, nutrition and health-related data types (health-related data types are
grouped with finer granularity). Each permission group grants apps access to a
set of data types. Apps specify one or more of these scopes to work with health
and wellness data, and Google Fit requests the corresponding permissions from
the user.

## Google Fit APIs

Google Fit provides the following APIs:

- [Android APIs](https://developers.google.com/fit/android) for Android apps.
- [REST API](https://developers.google.com/fit/rest) for apps on any platform.