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 →Early in release cycle
Best for: Regular runners and triathletes who race 5K to marathon distances and want accurate multi-band GPS, detailed training load management, and Triathlon Coach structured plans. The speaker and microphone make it a more capable daily-wear watch than the FR265 it replaces.
Full details →| Fitbit Air | Garmin Forerunner 570 | |
|---|---|---|
| Tier | Fitness Tracker | Sports GPS |
| Platform | iOS & Android | iOS & Android |
| Battery | 7 days | 11 days |
| Always-on display | ❌ | ❌ |
| GPS | ❌ | ✅ |
| Cellular | ❌ | ❌ |
| Released | May 7, 2026 | May 15, 2025 |
| Cycle length | — | 806 days |
| Cycle advice | good | good |
| Deals advice | good | neutral |
| 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.
L1+L5 dual-frequency GPS for precise tracking in cities and trails, paired with Garmin's most advanced heart rate sensor — adding skin temperature monitoring over the FR265.
A first for this price tier — take phone calls, use voice assistant, and hear Bluetooth audio directly from your wrist. A meaningful upgrade over the silent FR265.
AI-powered triathlon training plans that adapt to your swim, bike, and run fitness — a key differentiator over the FR265 for multisport athletes.