Smart rings offer the most comfortable way to track HRV overnight. Oura is the established leader; Ultrahuman is the ambitious newcomer with no subscription fees.
Comparison Overview
| Category | Oura Ring Gen 3 | Ultrahuman Ring Air |
|---|---|---|
| Price Model | $300-400 + $6/month optional | $349 one-time ✓ |
| Ultrahuman has no ongoing fees | ||
| Sleep Tracking | Excellent, years of refinement ✓ | Very good, improving rapidly |
| Oura has more mature algorithms | ||
| HRV Analysis | Readiness Score with contributors ✓ | Movement Index with HRV data |
| Oura's insights are more detailed | ||
| Recovery Guidance | Readiness 0-100 with recommendations | Movement Index with suggestions |
| Both provide actionable guidance | ||
| Additional Sensors | SpO2, temperature, HR | SpO2, temperature, HR + CGM option ✓ |
| Ultrahuman offers metabolic integration | ||
| App Quality | Polished, intuitive interface ✓ | Clean design, still evolving |
| Oura's app is more mature | ||
| Battery Life | 4-7 days | 4-6 days |
| Similar endurance | ||
| Research Validation | Multiple peer-reviewed studies ✓ | Limited published research |
| Oura has more scientific validation | ||
The Bottom Line
Choose Oura Ring for the most refined smart ring experience with proven accuracy and years of algorithm development. Choose Ultrahuman Ring Air if you want to avoid subscription fees, are interested in metabolic tracking (CGM integration), or want a capable alternative at similar hardware cost.
Detailed Reviews
Oura Ring Gen 3
Best for those who prioritize comfort and discretion. The ring form factor is unmatched for sleep tracking, though...
Full reviewUltrahuman Ring Air
A compelling Oura alternative with no subscription fees. Strong HRV and sleep tracking in a comfortable form factor....
Full review