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Oura
Smart ring for sleep and health tracking with exceptional accuracy — tracks sleep stages, HRV, body temperature, and readiness scores in a sleek, screenless form factor.
Why It Matters
Oura Ring 4 provides clinical-grade sleep and recovery data without screens or distractions. For athletes and biohackers, the HRV and readiness insights are non-negotiable. Subscription required for deep metrics.
Limitations
Requires subscription for full insights · Ring sizing critical (free sizing kit) · No GPS tracking · Limited without subscription
Last updated: Mar 19, 2026Last verified: Mar 19, 2026
Ethics & Responsibility
72
Good
Above-average practices with good transparency.
Safety
78
Good safety practices in place with active monitoring.
Bias
72
Active bias monitoring with documented fairness practices.
Power
60
Standard corporate structure; some transparency.
Copyright
78
Clear content policies with attribution practices.
Security
75
Robust safeguards against malicious use.
Privacy
62
Standard data practices; some collection.
Environment
62
Standard practices; limited environmental reporting.
Military
78
Clear restrictions on defense applications.
Arts
79
Supports creative workflows with some attribution practices.
Truth
72
Good accuracy with some source attribution features.
Cognition
74
Supports learning outcomes alongside assistance.
Known Concerns
- Biometric health data collection — privacy sensitivity
Last updated: 2026-03
How we score ethics:
Tools are evaluated across 11 categories based on public disclosures, third-party audits, regulatory actions, and documented incidents.
Good Bot = Top 25% of ethics scores
Bad Bot = Bottom 10% of ethics scores
User Ratings
NBC News
4.6/5243 reviews reviews
"arguably the best smart ring on the market"Read reviews on NBC News →
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