GoKawiilMonitoring your health has never been easier thanks to wrist- and finger-worn fitness trackers. But analyzing the collected data has largely been left to the user. Until recent years, that is, when some of the tech companies that make these wearables launched their own AI health coaches.
In October 2025, Google debuted its version called Coach, powered by Gemini AI, for US Fitbit Premium subscribers on Android. However, the October launch was just a preview, with the company requesting feedback from early adopters. This February, Google expanded the public Coach preview to include iOS users and Fitbit Premium members in Canada, the UK, Australia, New Zealand and Singapore. Google announced Tuesday at its annual The Check Up health event that it's adding additional features to its all-in-one fitness trainer, sleep coach and health advisor.
A Google representative didn't immediately respond to a request for comment.
Improved sleep insights and scoring
For sleep tracking, the company's most significant update yet delivers a 15% increase in sleep stage accuracy, based on comparisons between its latest and previous algorithms across compatible Pixel and Fitbit devices.
The current model will now also be better able to differentiate between when you're trying to sleep and when you're actually asleep. It can detect when you're napping, when your sleep has been interrupted or when you're transitioning between sleep stages.
In a few weeks, these enhancements will all contribute to a revamped Sleep Score that won't just focus on how much sleep you got, but on how much time it took you to get that sleep. Because it has more sleep data to work with, Coach will be able to provide more informed insights and recommendations for better sleep.
Fitbit's upcoming personal health coach updates center around sleep, medical records and continuous glucose monitor data. Google
Medical record availability
In April, US subscribers will be able to link their medical records, such as medications, lab results and doctor visit history, in the Fitbit app.
... continue reading