Versus Engine
Oura Ring 4 vs Ultrahuman Ring Air
Specs, price and the one trade-off that actually decides it — Oura Ring 4 against Ultrahuman Ring Air, side by side.
Cheaper to start
Tie
Both start at a similar price.
Rated higher
Ultrahuman Ring Air
8.2 vs 8.1 on our design scale.
Standout
Oura Ring 4
Best-in-class sleep tracking accuracy
Oura Ring 4
The all-titanium fourth-generation smart ring, from $349 plus a required membership.
Where it wins, where it doesn't
Pros
- Best-in-class sleep tracking accuracy
- Lightweight titanium build
- Excellent battery life
Cons
- Full data access requires a $5.99/month membership on top of the hardware
- Gold and ceramic finishes jump to $499
- Cannot buzz — no haptics, so it tracks rather than tells
Specifications
- sizes4 to 15
- batteryUp to 8 days
- sensors18-path multi-wavelength PPG, temperature, SpO2
- materialTitanium, inside and out
- charge_timeUp to 120 minutes
- subscriptionOura Membership, $5.99/month or $69.99/year
Ultrahuman Ring Air
An ultra-lightweight smart ring designed for athletes and continuous glucose monitor integration.
Where it wins, where it doesn't
Pros
- Subscription-free model
- Actionable metabolic insights
- Incredibly light at 2.4g
Cons
- App interface can feel overwhelming
- External finish is prone to scratching
Specifications
- sizes—
- battery—
- sensors—
- material—
- charge_time—
- subscription—