It is a single set of APIs that blends data from multiple apps and devices.

Google Fit for iOS used Apple Health, Nike Run Club, Headspace or connected device such as Apple Watch or Wear OS smartwatch connected to user device.

[9][10] In August 2019, Google announced dark theme, sleep insights and workout map feature availability.

[19] Google Fit provides a single set of API for apps and device manufacturers to store and access activity data from fitness apps and sensors on Android and other devices (like wearables, heart rate monitors or connected scales).

Users can choose who their fitness data is shared with as well as delete this information at any time.