Natural Cycles: Fertility App
NaturalCycles Nordic AB
Download price only. In-app purchases and subscriptions may cost extra.
- Developer
- NaturalCycles Nordic AB
- Version
- 5.9.0
- Minimum iOS
- 16.7
- Age rating
- 17+
- App Store rating
- 4.79 / 5 (30,062)
- App languages
- EN, PT, ES, SV
App Store region: United States · Checked: Sep 21, 2026
Sources & method ↗
About this app
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, compatible Garmin devices or Apple Watch Series 8 or newer. • 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. Natural Cycles connects with Apple Health to read and write your health data, including medications, body temperature and cycle information. ___________ 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.
What’s new
We have polished the app for an even smoother experience.