Fitbit Air: a slim tracker with an ambitious AI health coach

The Google Fitbit Air pairs a lightweight, long‑lasting tracker with Google's AI Health Coach, offering daily sleep/readiness summaries and personalized daily actions while letting you use basic tracking without the AI. The Air’s hardware excels (comfort, battery life) and supports a robust metric set, but the AI coach requires substantial setup and ongoing handholding (including uploading medical records via CLEAR verification) and can revert to older data; its best use today is as a helpful bridge between doctor visits, not a replacement for medical care. The option of a premium subscription is optional, with a three‑month trial included, making the AI features accessible without forcing paywalls. Overall, the Air represents Google’s most practical health wearable to date, balancing affordability with ambitious software amid ongoing AI-health challenges.