First-generation product — no historical cycle data to predict a successor
Best for: Health-focused users who want passive, 24/7 biometric tracking without a screen on their wrist. Particularly strong for those drawn to WHOOP but put off by the subscription model — the Fitbit Air delivers comparable core health data for $99 outright. Works with both iOS and Android.
Full details →Overdue for a refresh — no successor announced yet. Prices should be at their lowest
Best for: Android or iPhone users who want a balanced smartwatch with solid Fitbit health tracking, multi-day battery, and a clean square watch design — without the premium price of a Galaxy Watch or Apple Watch.
Full details →| Fitbit Air | Fitbit Versa | |
|---|---|---|
| Tier | Fitness Tracker | Smartwatch |
| Platform | iOS & Android | iOS & Android |
| Battery | 7 days | 6 days |
| Always-on display | ❌ | ❌ |
| GPS | ❌ | ✅ |
| Cellular | ❌ | ❌ |
| Released | May 7, 2026 | Sep 25, 2022 |
| Cycle length | — | 730 days |
| Cycle advice | good | bad |
| Deals advice | good | good |
| Next model | — | — |
Unlike WHOOP, there is no mandatory membership — pay $99 once and use Fitbit Air with the free Google Health app. Google Health Premium ($9.99/month) is optional.
Continuous heart rate, SpO2, HRV, and skin temperature tracking plus background FDA-certified AFib detection, in a 12g pebble designed to be worn and forgotten.
A week between charges, with a 5-minute top-up delivering a full day of use — significantly less downtime than WHOOP's slide-on charging system.
Rare for a smartwatch with real GPS and health sensors to work fully on both platforms — Versa 4 does.
Turn-by-turn navigation and NFC payments without needing your phone in hand.
Sleep stages, daily readiness score, Active Zone Minutes, and SpO2 — all on a 6-day charge.