Google Health finally syncs Fitbit data to Apple Health

Google Health can now send Fitbit data directly to Apple Health, closing one of the most obvious gaps for iPhone users. Version 5.05 adds support for sharing exercise, sleep, vital signs, steps and other information with Apple’s health platform.

Until now, the connection worked mainly in the opposite direction. Google Health could read information stored in Apple Health, including data from an Apple Watch and other connected apps, but it could not write Fitbit data back.

That changes with the latest iOS update. The Google Health version history now lists “Sync to Apple Health” among the additions in version 5.05, which began rolling out on August 2.

Google Health now writes data to Apple Health

Google says users can share exercise records, sleep, vitals, steps and more from Google Health to Apple Health. The company has not published a complete list of supported categories yet, so the exact selection may depend on the device and the permissions enabled on the iPhone.

To set it up, users first need to install Google Health 5.05 from the App Store. Inside Google Health, the controls should appear under Connections, Apps and services, Apple Health and Manage data and access.

The permissions can also be checked from Apple Health. Open the Sharing tab, select Apps and then Google Health to choose which information the app can read and write.

Some early users report that the new write permissions do not appear until the Google Health app has been fully updated or restarted. That could explain why the feature is visible for some people but initially appears to remain one-way for others.

A long-standing Fitbit limitation disappears

This is a useful addition for anyone who wears a Fitbit but prefers Apple Health as the main repository for their health information. It also allows compatible Fitbit data to become available to other iPhone apps that use Apple Health as their data source.

Previously, users often relied on paid third-party apps to move Fitbit information into Apple Health. Those services may still offer advantages such as wider historical imports or support for additional data fields, but many users will no longer need a separate bridge for basic daily data.

Google had already started moving in this direction. Earlier this year, the company added source-level tracking to Google Health, allowing users to view information from Fitbit, Apple Health and other connected platforms separately inside the app.

The flow can now work in both directions. Apple Watch and iPhone data can enter Google Health, while compatible Fitbit information can leave Google Health and appear inside Apple Health.

That also gives Fitbit Air owners more flexibility. The screenless tracker relies heavily on its phone app, something that became clear during our Fitbit Air review, so being able to use its data elsewhere makes the hardware less dependent on Google’s interface.

HRV and older data may be limited

The new integration does not appear to export everything. Early testing suggests heart rate variability is not currently among the information Google Health writes to Apple Health, despite HRV being available inside both platforms.

That may relate to differences in how Fitbit and Apple calculate and store HRV, although Google has not provided an official explanation. Proprietary Google metrics such as Cardio Load and Readiness are also unlikely to transfer because Apple Health does not provide direct equivalents for those scores.

Historical syncing is another area that remains unclear. Some users report receiving only recent information at first, while others say that reconnecting the service and leaving both apps open brought across more of their history.

Google’s existing support page still says the app cannot write data to Apple Health and that the capability will arrive later in 2026. The release has therefore moved faster than the documentation, which should be updated once the wider rollout settles.

Version 5.05 follows last month’s Google Health 5.04 update, which restored custom foods and improved sleep and exercise tracking. That release rebuilt features that Fitbit users previously had, while Apple Health syncing adds something many have requested for years.