Wearables & Trackers
Rings, watches and bands that turn training and recovery into data you can coach with.
Oura Ring Gen3
Best for: Sleep & recovery
The most wearable recovery tracker — sleep and readiness without a screen on your wrist.
Whoop 4.0
Best for: Strain & performance
The coach's strain-and-recovery band — screenless, built to program by readiness.
Apple Watch Series 9
Best for: Everyday smartwatch
The best all-round smartwatch if your clients live in the Apple ecosystem.
Garmin Forerunner 165
Best for: Runners, best value
Garmin's full training metrics at an entry price — the value pick for endurance.
Fitbit Charge 6
Best for: Affordable all-rounder
The best-value everyday tracker — accurate sensors and ECG for ~€130.
Ultrahuman Ring AIR
Best for: Metabolic + ring fans
Subscription-free smart ring with a metabolic angle (glucose add-on). On our review list.
Compare side-by-side
| Oura Ring Gen389Scorefrom€299Review → | Whoop 4.085Scorefrom€30Review → | Apple Watch Series 984Scorefrom€419Review → | Garmin Forerunner 16584Scorefrom€249Review → | Fitbit Charge 680Scorefrom€130Review → | |
|---|---|---|---|---|---|
| Form factor | Ring | Band (screenless) | Watch | Watch (running) | Band |
| Battery life | ~7 days | ~5 days | ~18 h (36 h low-power) | ~11 days | ~7 days |
| Screen | None | None | Always-on OLED | AMOLED | AMOLED |
| Sleep tracking | Best-in-class | Detailed | Basic | Yes | Yes |
| Recovery / HRV | Readiness score | Strain + Recovery | HRV metrics | Body Battery | Daily Readiness (Premium) |
| Subscription | Required (~€6/mo) | Required (membership) | None (Fitness+ optional) | None | Optional (Premium) |
| Water resistance | 100 m | ~10 m | 50 m | 50 m (5 ATM) | 50 m |
Prices are our reviewed reference points.
Head-to-head
Affiliate disclosure. We may earn a commission from links on this page. It never affects the Sqwod Score — scores are set by the methodology, not commission.