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
18-path multi-wavelength PPG sensor
Oura Ring 4
The all-titanium fourth-generation smart ring, from $349 plus a required membership.
Where it wins, where it doesn't
Pros
- Comprehensive health and wellness tracking with advanced sensors
- Titanium construction for durability and comfort
- Up to 8 days of battery life
Cons
- High price point starting at $349
- Mandatory subscription ($5.99/month or $69.99/year) for full functionality
Specifications
- batteryUp to 8 days
- bestRating—
- Black$399
- Brushed Silver$499
- category—
- charge_timeUp to 120 minutes
- Cloud (Oura Ring 4 Ceramic)$399 $499
- Deep Rose$499
- description—
- Gold (Oura Ring 4)$399 $499
- materialTitanium, inside and out
- name—
- Oura Ring 4From $349
- Oura Ring 4 Ceramic$399
- Oura Ring 4 Charger$59.00
- Oura Ring 5 Charger$59.00
- Oura Ring Gen3 Charger$59.00
- price—
- priceCurrency—
- priceValidUntil—
- ratingValue—
- Redesigned Finish$499
- reviewCount—
- seller—
- sensors18-path multi-wavelength PPG, temperature, SpO2
- shippingDestination—
- Silver$399
- Silver (Oura Ring 4)$349
- sizes4 to 15
- Stealth$499
- Stealth (Oura Ring 4)$349 $399
- subscriptionOura Membership, $5.99/month or $69.99/year
- worstRating—
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
- battery—
- bestRating5
- Black—
- Brushed Silver—
- categoryWearable Technology
- charge_time—
- Cloud (Oura Ring 4 Ceramic)—
- Deep Rose—
- descriptionUltrahuman Ring AIR ® is the world's most comfortable and compact smart ring that monitors your sleep, movement and recovery.
- Gold (Oura Ring 4)—
- material—
- nameUltrahuman Ring AIR
- Oura Ring 4—
- Oura Ring 4 Ceramic—
- Oura Ring 4 Charger—
- Oura Ring 5 Charger—
- Oura Ring Gen3 Charger—
- price349
- priceCurrencyUSD
- priceValidUntil2026-12-15
- ratingValue4.7
- Redesigned Finish—
- reviewCount2500
- sellerUltrahuman
- sensors—
- shippingDestinationGLOBAL
- Silver—
- Silver (Oura Ring 4)—
- sizes—
- Stealth—
- Stealth (Oura Ring 4)—
- subscription—
- worstRating1