A Promising AI Health Coach Off to a Shaky Start
Google’s new Health Coach sits at the center of the company’s revamped Google Health app, which is replacing the legacy Fitbit experience on Fitbit trackers and Pixel Watch devices. Positioned as a premium, AI-powered trainer, the coach is meant to interpret activity, sleep, and exercise data to offer personalized coaching. Early hands-on reports, however, suggest the rollout is not entirely smooth. Testers describe the assistant as verbose yet shallow, often padding basic tips with long-winded explanations that feel more like generic lectures than tailored guidance. At the same time, Google has introduced Fitbit Air, a screenless tracker designed to pair tightly with the new app and its AI features. For users considering a subscription to Google Health Premium to unlock full coaching capabilities, these initial impressions raise a crucial question: is the Google Health Coach accuracy good enough to justify paying for AI-driven guidance day in and day out?
AI Hallucinating Workouts and Phantom Fitness Data
The most alarming issue for early testers is the AI hallucinating workouts that never took place. In one reported case, Google’s Health Coach correctly referenced recent sleep and exercise history, then confidently claimed the user had completed a five-mile run that simply did not exist in their logs. When challenged, the bot eventually admitted the error but implied the user must have failed to record the session, shifting blame rather than clearly acknowledging a health tracking error. In another instance, the app congratulated a tester on a near-perfect sleep score of 99, while the underlying stats page showed a more modest 85. These phantom records don’t just look like minor glitches; they directly undermine Google Health Coach accuracy and raise concerns about Fitbit Air reliability, especially for people relying on precise workout and sleep histories to monitor progress or share data with healthcare professionals.
From Fitbit to Google Health: Reliability Risks for Upgraders
The transition from the Fitbit app to Google Health is automatic, arriving as an upgrade rather than a separate install. That means long-time Fitbit users may suddenly find their familiar dashboards wrapped in a new interface, with the AI Health Coach prominently featured. While step, exercise, and basic sleep tracking remain available for free, advanced sleep insights, AI-designed plans, and chat-based coaching now require a Google Health Premium subscription at USD 9.99 (approx. RM46) per month or USD 99.99 (approx. RM460) per year. For those used to Fitbit’s more deterministic tracking, the prospect of an AI assistant that misreads or invents data is troubling. Even where the coach is helpful—such as logging meals via chat or interpreting screenshots and photos of workouts—it can still miss details or approximate nutrition, leaving users unsure whether their health records truly reflect reality or a convenient AI guess.
Convenience vs. Trust in AI-Powered Health Tracking
Despite its flaws, the Google Health Coach does offer genuine convenience. Users can log food by describing meals, with calorie and protein estimates that often land reasonably close to the packaged nutrition labels. The assistant can also parse screenshots from other fitness apps or photos of handwritten whiteboard workouts, filling in exercise logs with minimal manual entry. These features demonstrate how AI could streamline health tracking when done well. But hallucinated workouts, mismatched sleep scores, and irrelevant source links—such as pointing to a Reddit thread that itself quotes another chatbot—highlight a deeper trust problem. When an AI coach feels like a lecturing chatbot rather than a precise health tool, confidence in its recommendations drops. Until Google resolves these health tracking errors and reins in the AI hallucinating workouts, many users may choose to treat its advice as optional commentary rather than authoritative coaching.