SLEEPSleep stages over 8 h.The KEORA ring
2.2 mm, waterproof to 50 m, 10-day battery life. Six sensors that read your sleep, stress and recovery, with no mandatory subscription.

Free app for life, no subscription. Data encrypted in Europe, never resold. 2-year warranty · Klarna pay in 4, interest-free.
Hypoallergenic shell, brushed finish. The KEORA ring weighs 3.6 g and is 2.2 mm thick, the thinnest on the health-ring market. Wear it for sport, in the shower, at the pool.
No daily wear to interrupt, no stressful charging: 10-day battery life, full wireless charge in 90 minutes.

What it reads
Consumer sensors, wellness indicators (not for medical use). Accuracy depends on how it's worn.
SLEEPSleep stages over 8 h.
HRVHeart rate variability over 24 h.
STRESSStress heatmap over the day.
SPO2Blood oxygen overnight.
ACTIVITYActive minutes per day over 7 days.


The KEORA app is free for life, with no mandatory subscription to wear the ring and read your data. Your biometrics stay encrypted on servers in Europe, never resold, never shared without your explicit consent.
You can export or delete everything in one click. 2-year warranty, pay in 4 interest-free with Klarna.

| KEORA Ring | Oura Ring | Whoop | |
|---|---|---|---|
| Ring, one-time purchase | 299 € | 349 € | Mandatory subscription |
| Free app for life | ✓ | €5.99/month | €30/month |
| Data hosted in Europe | ✓ | , | , |
| Optional personal supplement subscription | €29/month | , | , |
| Water resistance | 50 m | 100 m | Band only |
| Warranty | 2 years | 1 year | 1 year |
€299 one-time. Free app for life. 2-year warranty. Pay in 4 interest-free with .
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