Google Fit is a health-tracking platform developed by Google for the Android operating system, Wear OS, and iOS. It is a single set of APIs that blends data from multiple apps and devices. Google Fit uses sensors in a user's activity tracker or mobile device to record physical fitness activities, which are measured against the user's fitness goals to provide a comprehensive view of their fitness. It is set to be replaced by the Google Health app in 2026, five years after Google acquired the health company Fitbit.