Monitoring 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.
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.
This feature was created in collaboration with B. Well Connected Health, an AI-powered digital health platform that aggregates health data from different providers, and Clear, the identity verification platform known from airport security.
In the Fitbit app, you can search for your doctor and then link to their member portal. Or if you use Clear to verify your identity with a selfie and a valid ID, it will search for medical records on your behalf. Availability will depend on your provider.
Once you verify your identity, Fitbit’s personal health coach can access your medical records.
Fitbit’s Coach can then use your medical history to create more personalized guidance that combines your lab results, data collected by your Fitbit and any other relevant information it collects from your records. In several months, users will be able to share these records and summaries with their provider or family members using a QR code or Smart Health Link URL.
What it will look like once you’re able to share your Fitbit health summary with a doctor or relative.
Privacy is always a concern
Privacy experts caution people to think twice before uploading medical information into an AI tool.
Fitbit says it securely stores your medical records and that you control how your data is used, whether it’s shared and whether it’s deleted. The company also says your medical records won’t be used for ads.
AI health coaches are not a replacement for a doctor, as they can’t diagnose or treat medical conditions. You shouldn’t make any changes to your lifestyle or health routine without consulting your own doctor.
The future of Fitbit’s personal health coach
Google also announced that it’s investing in health research on topics such as predicting insulin resistance using data collected by wearables, hypertension and learning more about how AI performs in virtual care settings. These study topics help us get a sense of what Google may have in store for future Fitbit updates.
In April, Fitbit members in the public preview will also be able to connect a continuous glucose monitor to the Fitbit app via Health Connect. This feature lets you see all your health data from compatible apps in one place. With this connection, Fitbit members can ask their Coach for more information about how their workouts or meal choices affect their glucose levels.
