The smart ring that started it all still leads on sleep science.
Product Image: Oura
8.0
KADS SCORE
Quick Take
The Oura Ring Gen 4 remains the smart ring to beat for sleep and recovery tracking. The hardware is refined, the battery lasts over a week, and the app’s insights are genuinely useful. At $349 plus a membership it is a real investment, but for data driven health tracking nothing else is this polished.
What We Like
- Best in class sleep tracking with Sleep, Readiness, and HRV scores
- Smart Sensing adapts through day and night for continuous data
- Up to 8 days of battery per charge
- Titanium build, water resistant to 100 meters
What We Don’t Like
- Full insights require a $5.99 per month membership
- $349 plus subscription is a big total cost
- Sizing kit needed since sizes differ from jewelry rings
- No vibration or smart notifications
Product Details
Full Review
Quality
The Ring 4 uses a full titanium interior with Smart Sensing that adapts sensor sampling through the day and night, tracking over 50 metrics including sleep stages, resting heart rate, HRV, temperature trends, and activity. It weighs as little as 3.3 grams depending on size, comes in sizes 4 to 15, and is rated water resistant to 100 meters. The companion app turns the raw data into Sleep, Readiness, Stress, and women’s health insights.
Value
At $349 the Ring 4 undercuts the newer Ring 5 by $50 while keeping the core experience, and it frequently goes on sale. The $5.99 monthly membership is the real ongoing cost, and it stings when rivals offer subscription free tracking. If you will actually use the insights, the total cost is justifiable; if not, it is an expensive band.
Who Should Buy It
Sleep optimizers and recovery focused athletes who want rich health data without wearing a watch to bed.
Who Should Skip It
Subscription haters and anyone who wants notifications on their finger should look elsewhere.
FINAL VERDICT
The Ring 4 is still the most refined smart ring you can buy. Superb sleep data, week long battery, and a mature app. Just go in eyes open about the subscription, and order the free sizing kit first.
8.0 / 10
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