Natural Cycles is a 100% non-hormonal birth control app cleared by FDA. Get an NC° Band with our annual subscription, or a compatible wearable to measure your basal temperature and track your biomarkers. Trusted by 6M+ women, using Natural Cycles as an ovulation tracker is a great way to start your birth control or fertility journey.

Trust in science to support you
• Natural Cycles is 98% effective when used as intended, and 93% with typical use.
• Typical use is in the same effectiveness category as the contraceptive pill, which is 93% effective.
• Unlike period trackers, our algorithm uses personalized temperature trends data to detect ovulation.

Naturally prevent pregnancy
• NC° Birth Control is a non-hormonal contraception with no side effects.
• Our algorithm updates your fertility and ovulation status daily based on your temperature, showing not-fertile days, or days to use protection.

Organic pregnancy planning
• NC° Plan Pregnancy measures your body temperature to track ovulation when trying to conceive.
• Powered by biometrics, our algorithm pinpoints ovulation and peak fertility - you can try when it matters.
• NC° partner view lets you choose to allow your partner to follow your pregnancy planning journey.

Monitor your pregnancy
• NC° Follow Pregnancy helps you monitor your baby’s developmental stages.
• Get tailored guidance, tracking baby movements, morning sickness, and other symptoms.

Get postpartum support
• NC° Postpartum supports you after pregnancy with daily check-ins, tracking symptoms, post-partum bleeding and providing articles with expert guidance.
• Use temperature to know when ovulation returns post-pregnancy.

Track perimenopause symptoms
• NC° Perimenopause measures your temperature to track hormonal changes and symptoms until post-menopause.

Gain sleep insights
• See how and why your sleep changes across your cycle with Sleep Insights.

Choose your measuring device
• Natural Cycles is an ovulation tracker that can be used with the NC° Band, basal thermometer, Oura Ring, WHOOP, or compatible Garmin devices.
• Easily measure your temperature to track your fertility, using your choice of compatible wearable.
• Sign up to NC° Annual subscription and receive a free NC° Band.

More than a period tracker
• The NC° app adapts to your unique cycle, tracking fertility and ovulation even with irregular periods.
• Most period trackers assume you have a 28-day cycle, when most women don’t. We give you tailor-made guidance based on your menstrual cycle.

Subscription service
• Subscribe to our monthly or annual plan to unlock core features.
• Subscriptions are FSA/HSA eligible for reimbursement.

Every Natural Cycles subscription includes our advanced data protection program. Some free period tracking apps don’t have the same level of accountability. Your privacy is a priority. Natural Cycles is designed to keep your data safe.

The NC° app is more than just a period tracker, use it as a birth control, or to plan pregnancy with our ovulation tracker and daily fertility updates. Join 6 Million+ women who trust Natural Cycles for birth control, ovulation tracking, and more.

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Precautions
• Natural Cycles does not protect against sexually transmitted infections (STIs). Use a condom to protect against STIs.
• No method of birth control is 100% effective. Even when using the birth control app perfectly, there is still a chance of pregnancy.
• Natural Cycles is for women 18 and older.
• Natural Cycles is authorized for use as birth control in the US, Canada, the UK, the EU/EEA, Australia, Singapore, Brazil, and South Korea. Outside these regions, the app is intended for fertility monitoring only.
• To use Natural Cycles, you need to understand English or one of the supported languages.
• Consult with a doctor before making any medical decisions.