Natural Cycles: Fertility App

About this app

Trusted by 6M+ women over 10 years. Awarded Best Birth Control app by Healthline and Bestapp.com. 100% hormone-free contraception. No prescription is needed. Scientifically proven to be 93% effective with typical use and 98% effective with perfect use. FDA cleared. HIGHLIGHTS: ○ The NC° app uses your body temperature to track ovulation so you know exactly when you're fertile – and what days you can/cannot get pregnant. ○ The NC° app adapts to your unique cycle, even if it’s irregular. ○ No hormones, no side effects, no pills or procedures – birth control revolutionized. ○ Scientifically proven to be effective: 93% effective with typical use, and 98% effective with perfect use. ○ Sign up to NC° Annual subscription for a FREE NC° Band, and start measuring today! ○ Learn how your sleep patterns change throughout each phase of your cycle. ○ Offers advanced data protection. ○ Get daily fertility insights + personal ovulatory patterns to help with your natural family planning needs. ○ One app, five modes: NC° Birth Control, NC° Plan Pregnancy, NC° Follow Pregnancy, NC° Postpartum, and NC° Perimenopause. ○ The NC° app features customizable mood trackers, great for getting to know your body better. ○ Measure your temperature using the NC° Band, or by wearing an Oura Ring, WHOOP, Apple Watch Series 8 or newer (while you sleep), or a compatible Garmin device. ○ Get reimbursed for your NC° subscription – US users are now covered by insurance. ○ We recommend a minimum of 2-3 cycles to get the most out of your Natural Cycles subscription. ○ Natural Cycles requires a subscription to access its core features. Subscription options include monthly and annual plans. ○ Our subscription fee helps to protect you and your data. Many free apps work by selling their users’ data to third parties for advertising. Your privacy is a priority. Natural Cycles is designed to keep your data safe. Natural Cycles is more than a period tracker. Most other fertility tracking apps assume your cycle is 28 days long, even though 87% of women have cycle lengths that don't fit into the 28 day pattern... We understand that birth control is not a one-size-fits-all. Your cycle is unique to you! Our algorithm uses personalized temperature data to confirm your ovulation, reducing the risk of you being assigned an incorrect fertile day. Unlike period trackers, the NC° app allows you to identify your fertility status daily, so you can prevent pregnancy or plan for it with greater precision. From birth control to planning pregnancy and every cycle in between – Natural Cycles is there for you with each stage of your fertility journey. *E. Berglund Scherwitzl et al. “Perfect-use and typical-use Pearl Index of a contraceptive mobile app”, Contraception, Volume 96, Issue 6, 420 - 425. 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 getting pregnant. ○ Natural Cycles is for women over the age of 18. ○ 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. ○ Before making any medical decisions, remember to consult with a doctor. Natural Cycles connects with Apple Health to read and write your health data, including medications, body temperature and cycle information.

This update includes a few tweaks for an improved app experience.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 24, 2026 · 1:57 AM Free