Google Fit API Alternatives (It's Deprecated) (2026)

If you built on the Google Fit REST or Android APIs, you are here because the platform is going away, not because you want to switch. Google stopped accepting new developer signups for the Google Fit APIs on 1 May 2024, and support runs only until the end of 2026 (verify the exact turndown date against Google's docs). The hard part: there is no drop-in, 1:1 replacement. Google Fit stored data in the cloud and served it over REST; the successor Google points Android developers to — Health Connect — is an on-device store, not a cloud API. So this is a re-architecture, not a library swap, and your right answer depends on how you were using Fit.

The short version: for Android on-device data, move to Google Health Connect; for cloud/account data you used to fetch server-side, look at the Google Health API / Fitbit path; for the iOS side of a cross-platform app, use Apple HealthKit; and if you support many devices or want one integration to ride out this migration, use an aggregator (Terra, Junction, or Rook).

Why teams look for a Google Fit alternative

There is really one trigger here, and it is forced: Google Fit is deprecated. To be fair, Fit did a genuinely useful job for years — a single cloud REST endpoint that returned steps, activity, and aggregated fitness data across Android devices, without you touching each OEM's SDK. Nothing about it was broken. It is simply being wound down.

What makes the migration non-trivial:

• No new signups since 1 May 2024 — if you do not already have a Fit project, you cannot start one.
• Support only through end of 2026 (verify) — existing integrations keep working until the turndown, then stop.
• No 1:1 REST replacement. Fit was a cloud service; Health Connect is an on-device data layer. The shapes are different, so the data path, permission model, and where-the-data-lives all change.
• Data does not transfer automatically. Existing Google Fit history does not silently migrate into Health Connect; plan for a re-consent and re-sync of your users.

That last point is the one that surprises teams: you are not just changing an SDK, you are changing the architecture of how health data reaches your app. (For the specifics of the deprecation timeline and the migration decision, see Google Fit API deprecated: what to use.)

The alternatives

Each option below covers a different slice of what Fit used to do. Most teams end up using more than one.

Google Health Connect — the Android on-device successor

Health Connect is Google's stated on-device successor for Android. It is an on-device store that other apps read and write under an OS-granted permission, similar to Apple HealthKit on iOS. If your Fit usage was "read the user's steps, workouts, and activity on their Android phone," this is the closest thing to a home. Trade-off: it is on-device and Android-only — there is no server endpoint, so if your backend needs the data you upload it yourself, and it does nothing for iOS or web. Start with the Health Connect integration guide.

Google Health API / Fitbit path — the cloud successor

If you leaned on Fit's cloud model — fetching a user's account data server-side, without their phone being present — the first-party direction is Google's newer Google Health API and the Fitbit cloud integration being folded into it. Best for teams that need always-on, server-to-server access to account-level data. Trade-off: it is a different API with its own console, schema, and OAuth, and the Fitbit-side consolidation is still landing on Google's timeline (verify current availability) — so you are adopting a moving target, not a stable drop-in.

Apple HealthKit — the iOS counterpart

If you are cross-platform, Fit only ever covered Android; the iOS equivalent is Apple HealthKit, and Google's own guidance points iOS use cases there. Best for the iPhone side of an app that will use Health Connect on Android. Trade-off: iOS-only and on-device, so you now maintain two platform stores instead of one cloud API. See HealthKit vs Health Connect for how the pair lines up.

Terra / Junction / Rook — one aggregator across everything

An aggregator is a single integration that fronts Health Connect, HealthKit, and cloud wearable APIs (Fitbit, Garmin, Oura, Whoop, Strava, and more) behind one normalized schema. Best for teams that support many devices or platforms and would rather not stitch Health Connect + HealthKit + cloud APIs together by hand — especially attractive because it insulates you from this migration and the next one. Trade-off: a recurring vendor fee and a third party in your data path (raising HIPAA/BAA questions to verify per vendor). Junction is the product formerly known as Vital.

Comparison

Which should you pick?

There is no single winner — pick by what your Fit integration actually did:

• You read on-device Android fitness data (steps, activity, workouts on the phone) → Health Connect. It is the direct successor and the lowest-friction path for Android-native apps.
• You fetched cloud/account data server-side → the Google Health API / Fitbit path, accepting that it is a new API on Google's timeline.
• You are cross-platform (iOS + Android) → Health Connect on Android and HealthKit on iOS, together — that is the standard on-device pairing.
• You support many devices, or want to migrate once and not again → an aggregator (Terra, Junction, or Rook), so Fit's wind-down and future first-party changes sit behind a stable interface. Compare options in health-data aggregator APIs.

Is switching easy?

Honestly, no — this is a real re-integration, more so than a typical vendor swap, because the architecture changes. Cloud REST (Fit) to on-device store (Health Connect) means a new permission model, a new schema to re-map your fields onto, and a user re-consent and re-sync — Fit history does not carry over automatically. If you go the cloud route instead, you are onto a new API with its own OAuth and console. In every direction, plan for field re-mapping and asking users to reconnect.

The one path that collapses this work is an aggregator: it covers Health Connect, HealthKit, and cloud wearables through a single integration and normalized schema, so you re-map fields once and let the vendor absorb provider-side churn. That is the trade of a recurring fee against not re-engineering every time a platform like Fit is retired. If you are weighing it, the wearable data APIs overview lays out the direct-versus-aggregator decision.

This is general product and engineering information, not medical or legal advice; verify current deprecation dates and API availability against Google's official docs before you plan a migration.