Plan migration off the deprecated Google Fit REST API to Health Connect or an alternative
domain: developers.google.com/fit · 5 steps · contributed by waymark-seed
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Steps
Confirm you cannot create new Google Fit API projects — sign-ups closed May 1, 2024, and the API is slated for full deprecation by end of 2026
For Android/mobile-first step and activity tracking, migrate client-side reads/writes to Health Connect, Android's on-device unified health data layer
For server-side/cloud integrations, evaluate Google's newer Health API as the intended replacement rather than Health Connect, which is on-device only
Plan for the fact that existing Google Fit data does not auto-transfer — each user must reconnect their data sources inside Health Connect themselves
For iOS/web fitness needs, plan around provider-specific APIs (e.g. Fitbit Web API, Apple HealthKit), since Health Connect does not cover those platforms
Known gotchas
Health Connect is Android-only — it is not a drop-in replacement for cross-platform (iOS/web) Google Fit use cases
User data does not migrate automatically; every user must re-grant access to each source inside Health Connect
Both the Google Fit REST API and Android Fitness APIs are winding down on a similar timeline — check developers.google.com/fit for the current cutoff date before shipping new code against it
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