First-generation product — no historical cycle data to predict a successor
Full details →| Fitbit Air | Fitbit Charge | |
|---|---|---|
| Pricing | ||
| Starting price | $99★ | $120 |
| Subscription | ℹ️ Optional — $99/yr | ℹ️ Optional — $79/yr |
| Hardware | ||
| Weight | 12g★ | 15g |
| Water resistance | 50m | 50m |
| Battery | 7 days | 7 days |
| Always-on display | ❌ | ❌ |
| GPS | ❌ | ✅★ |
| Cellular | ❌ | ❌ |
| Platform | iOS & Android | iOS & Android |
| Tier | Fitness Tracker | Fitness Tracker |
| Buy timing | ||
| Released | May 7, 2026 | Sep 28, 2023 |
| Cycle advice | good★ | bad |
| Deals advice | good | great★ |
| Next model | — | Fitbit Charge 7 (Expected 2026) |
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.
Full ECG, electrodermal activity stress sensing, SpO2, and continuous heart rate in a tracker thinner than most smartwatches.
Google Maps navigation, Google Wallet NFC payments, and YouTube Music controls — more useful on-device apps than any previous Charge.
7 days of typical use, dropping to around 30 minutes per GPS workout session before needing a charge.
The right pick depends on what you optimize for.
$357 vs $396 over 3 years · no required subscription.
7 days vs 7 days battery.
6 sensors.
12g · no required subscription.
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 →Anyone who wants serious health and fitness tracking without the bulk or cost of a full smartwatch. Works with both Android and iPhone, making it the most accessible Fitbit tracker in the lineup.
Full details →