First-generation product — no release history to base predictions on
Best for: Health-focused wearers who want continuous biometric tracking without a watch on their wrist. Ideal for sleep researchers, recovery-focused athletes, and anyone who finds watches uncomfortable at night. Works with both iPhone and Android. The subscription is optional but unlocks most of the app's value.
Full details →Early in release cycle
Best for: Athletes, coaches, and fitness-obsessed users who want deep recovery and sleep data without screen distractions. WHOOP suits those who train hard and want to understand whether their body is ready to push. Not for casual users or those who want smartwatch features like notifications or GPS.
Full details →| Oura Ring | WHOOP 5.0 | |
|---|---|---|
| Tier | Smart Ring | Fitness Tracker |
| Platform | iOS & Android | iOS & Android |
| Battery | 7 days | 5 days |
| Always-on display | ❌ | ❌ |
| GPS | ❌ | ❌ |
| Cellular | ❌ | ❌ |
| Released | Oct 15, 2024 | May 8, 2025 |
| Cycle length | — | 1345 days |
| Cycle advice | neutral | good |
| Deals advice | neutral | neutral |
| Next model | — | — |
Oura has refined its ring sensors across four generations. The Ring 4's flattened LED array delivers more accurate SpO2 and heart rate data than previous generations, especially during sleep.
Up to 8 days of continuous 24/7 tracking between charges in a ring that weighs as little as 4 grams. No screen to drain — just sensors running around the clock.
The Oura app supports iPhone and Android equally. Core health data syncs to Apple Health, Google Health Connect, and 40+ third-party fitness apps.
No distractions — WHOOP tracks everything without buzzing, glowing, or asking for your attention. All data lives in the app.
WHOOP's Recovery Score synthesises HRV, resting heart rate, sleep quality, and respiratory rate to tell you how ready your body is each day.
The WHOOP battery pack slides onto the device and charges it without removal — no gaps in overnight sleep tracking.