The Oura Ring 4 is a sleek titanium smart ring that tracks your cycle, sleep, stress, HRV, and readiness 24/7 without any daily effort. Its Cycle Insights feature estimates your fertile window and detected day of ovulation. Pairs with Natural Cycles, the only FDA-cleared digital contraception app, for comprehensive cycle intelligence.
Tracks cycle, sleep, HRV, stress and readiness 24/7 passively.
96% ovulation detection accuracy validated by peer reviewed research.
Up to 8 days battery life in titanium design across 6 color options.
Duration:
weeks,
Sessions
Requires Oura membership at $5.99 per month or $69.99 per year after a free first month. Compatible with iOS and Android. FSA/HSA eligible. Available in sizes 4 to 15. Not a diagnostic device. Membership required to access all health features.
Join thousands of women taking control of their health through hormone intelligence and AI powered insights.
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LUVENA helps women understand their cycle and live better through hormone intelligence and AI powered insights.
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