Smart Ring Comparison: Oura Ring Gen 3 vs Ultrahuman Ring Air – Which One Deserves a Spot on Your Finger in 2025?
Introduction
Smart rings are quickly becoming the go-to wearable for fitness enthusiasts, runners, and biohackers who want cutting-edge tracking in a discreet, stylish package. In this comparison, we put two of the most advanced smart rings head-to-head: the Oura Ring Gen 3 and the Ultrahuman Ring Air. Which one truly leads in 2025? Let’s find out.
Design & Comfort
| Oura Ring Gen 3 | Ultrahuman Ring Air | |
|---|---|---|
| Material | Titanium with PVD coating | Titanium with scratch-resistant finish |
| Weight | 4 – 6 grams | 2.4 – 3 grams |
| Water Resistance | Up to 100 meters | Up to 100 meters |
| Comfort Level | Sleek, minimal design | Ultra-lightweight, optimized for workouts |
Verdict:
Both are stylish and durable, but the Ultrahuman Ring Air is significantly lighter, making it more comfortable for 24/7 wear.
Tracking Features
| Oura Ring Gen 3 | Ultrahuman Ring Air | |
|---|---|---|
| Sleep Tracking | Advanced sleep score with stages | Deep sleep, REM, latency, and recovery tracking |
| Heart Rate Monitoring | 24/7 HR, HRV tracking | 24/7 HR, HRV with real-time zone feedback |
| Body Temperature | Yes (nightly average) | Yes (real-time fluctuations) |
| Readiness Score | Personalized daily readiness score | Daily metabolic score and zone guidance |
Verdict:
Oura Ring Gen 3 is still the gold standard for sleep tracking, while Ultrahuman Ring Air stands out with real-time performance feedback and biohacking tools.
Battery Life & Charging
| Oura Ring Gen 3 | Ultrahuman Ring Air | |
|---|---|---|
| Battery Life | 4–7 days | 4–6 days |
| Charging Time | ~80 minutes | ~90 minutes |
Verdict:
Battery life is nearly equal, with a slight edge to the Oura Ring, though both perform well for their size.
App & Ecosystem
| Oura Ring Gen 3 | Ultrahuman Ring Air | |
|---|---|---|
| Mobile App | Intuitive, focused on readiness and sleep | More performance-driven with fitness, metabolic tracking |
| Subscription Required? | Yes – $5.99/month | No subscription required |
| Data Export & Integrations | Apple Health, Google Fit, Natural Cycles | Apple Health, Strava, training platforms |
Verdict:
Ultrahuman offers a no-subscription model with robust features, while Oura relies on a polished but paid app experience.
Pricing
Oura Ring Gen 3: Starting at $299 + monthly subscription
Ultrahuman Ring Air: Starting at $349 (no subscription)
Final Verdict: Which One Should You Buy?
For Biohackers and Data Nerds: Go with the Ultrahuman Ring Air. Its focus on metabolic performance, lightweight build, and no-subscription model make it a standout.
For Sleep-First Health Trackers: The Oura Ring Gen 3 remains the top choice thanks to its unmatched sleep insights and wellness scoring.
Ultimately, both rings are excellent in 2025 — the best choice depends on whether you prioritize recovery data or real-time performance metrics.