Head-to-head · Best Smart Rings

Oura Ring Gen 4 vs Ultrahuman Ring Air

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Oura Ring Gen 4 comes out ahead by a clear margin (4.4 vs 3.9). The gap is mostly about health-conscious users wanting full wellness data — read the strengths below before deciding.

Higher ratedRanked #2 in Best Smart Rings

Oura Ring Gen 4

4.4

$349

The Oura Ring 4 stands as a top-tier smart ring for holistic health tracking, according to PCMag's Andrew Gebhart and NBC Select's Harry Rabinowitz. It excels in sleep monitoring, heart rate tracking, and body temperature measurement with an 8-day battery life and fully titanium construction. However, the device requires an Oura Membership subscription to unlock full functionality, limiting basic data access. While it's ideal for users seeking comprehensive wellness metrics without a screen, it may not suit those needing detailed workout analytics or built-in GPS. The ring's sleek design and improved sizing options make it a strong contender for health-conscious consumers.

Strengths

— Improved 8-day battery life (up from 7 days)
— Fully titanium build with wider range of sizes (4-15)
— Accurate health tracking including heart rate, sleep stages, and body temperature

Watch-outs

— Requires a subscription for full features; basic data only available without membership
— Not the best for detailed workout data tracking
— No built-in GPS for outdoor activities

$349 · Check Price on Amazon Full review →

Ranked #4 in Best Smart Rings

Ultrahuman Ring Air

3.9

$299

The Ultrahuman Ring Air offers a lightweight alternative to the Oura Ring with accurate heart rate monitoring and all-day battery life up to 14 days. PCMag's Andrew Gebhart praised its comfort and accuracy, though TechRadar noted it lacks some advanced features found in competitors. While the $299 price tag is steep, the ring's precision and durability make it ideal for serious fitness enthusiasts who prioritize data accuracy over app ecosystem integration. Those seeking extensive third-party integrations or GPS tracking may want to consider alternatives.

Strengths

— Lightweight design at just 7.5g, making it more comfortable than the Oura Ring
— Accurate heart rate monitoring with 99% accuracy compared to chest straps
— Waterproof up to 100m for swimming and showering

Watch-outs

— Limited third-party app integration compared to competitors like Oura or Garmin
— No built-in GPS tracking for workouts
— Price point of $299 is higher than many fitness rings on the market

$299 · Buy at ultrahuman.com Full review →

How they stack up

Oura Ring Gen 4

The Oura Ring Gen 4 offers the most comprehensive health tracking and longest battery life of the group, but it requires a subscription unlike the RingConn Gen 2 Air, which provides basic tracking without one. While it's more accurate than the Samsung Galaxy Ring in health metrics, it lacks the lightweight comfort of the Ultrahuman Ring Air and GPS capabilities.

Ultrahuman Ring Air

The Ultrahuman Ring Air provides the most accurate heart rate monitoring and longest battery life, but it's more expensive than the RingConn Gen 2 Air and lacks third-party app support compared to the Oura Ring Gen 4. While it's lighter than the Oura Ring 4, it doesn't offer the same level of sleep insights or ecosystem integration as the Samsung Galaxy Ring.

Specs side-by-side

Spec	Oura Ring Gen 4	Ultrahuman Ring Air
Display	N/A	—
Weight	3.3-5.2 grams	7.5g
Battery life	up to 8 days	—
Built-in GPS	no	—
Sleep tracking	yes (including naps)	—
Heart-rate monitor	yes, with ECG	—
Water resistance	yes, up to 100 meters (up to 12 hours)	—
Battery	—	Up to 14 days
Waterproof	—	100m
Heart Rate	—	99% accuracy
Material	—	Titanium alloy

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