Amazfit April Firmware Adds HRV Sync to Apple Health

Amazfit dropped its April firmware update for the Active 3 Premium and Balance 2, and the headline feature is HRV data syncing directly to Apple Health. That one change matters more than the rest of the update combined.

Most of what landed this month is catch-up content, features that have been running on other Amazfit watches for months already. If you own a T-Rex 3 or a Cheetah Pro, nothing here is new to you. The Active 3 Premium and Balance 2 are just closing the gap within their own ecosystem.

The HRV sync to Apple Health is the real win for athletes who run mixed setups. If you use an iPhone and cross-reference recovery data between apps, having Amazfit HRV feed directly into Apple Health puts it alongside data from Whoop, Polar, or a Garmin connected via Health sync. At a price point well below a Garmin Forerunner 965 or a Polar Vantage V3, that interoperability closes one of the bigger practical gaps.

Still, Amazfit's HRV methodology and overnight tracking accuracy need to be weighed against what Whoop 4.0 or a Garmin Fenix 8 deliver in terms of consistency and clinical-grade reliability. Syncing data is not the same as measuring it better. Worth keeping in mind before you ditch your recovery stack.

Solid update. Not exciting. If HRV-to-Apple Health sync was the one thing stopping you from committing to the Active 3 Premium, that blocker is now gone.