Natural Cycles - Birth Control

4.4
23.3K reviews
Content rating
Mature 17+
1M+
Downloads
Content rating
Mature 17+
Sexual Themes
In-App Purchases
Learn more
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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, 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.
Updated on
Jul 6, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, Personal info and 6 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.4
23.2K reviews
Christine K
July 3, 2026
The app suddenly logged me out and won't let me into my account without forcing me to pay ANOTHER annual fee. I paid my full fee in February and have 7-8 months left. I'm selecting the login to my account option and it's treating me like I'm a new account. There is no way to bypass the selections and payment screen. Overall been good at predicting ovulation but the algorithm is off. It started to show ~3 weeks of green days and changed to barely a week of green days with no explanation.
Did you find this helpful?
NaturalCycles AG
July 6, 2026
Hi Christine, we are sorry to hear that this was your experience, and we would be happy to help you out with this. Could you please submit a ticket to our Support team at help.naturalcycles.com so that we can investigate this issue further?
Sarah White
May 7, 2026
Latest app changes are frustrating & seem like they were made by someone who doesn't *use* the app OR menstruate. Temp logging is now in a completely different section from symptom tracking. Also when logging temps, you have to hit save after every individual entry which doubles time. The "log a period" button will log if for that day, so if you are a night owl logging it from earlier that day you make errors. This is not an improvement to UX (from a long time customer)
4 people found this review helpful
Did you find this helpful?
NaturalCycles AG
May 13, 2026
Hi Sarah, We appreciate that you took the time to share your perspective with us as we are always looking for ways to improve. If you would like to elaborate more on this, we would love to hear your thoughts. Please reach out to us via help.naturalcycles.com Kind regards, NC°
Joann Laney
May 9, 2026
This app is money hungry and has horrible customer service. They count the 28 day free trial as a discount and won't allow the 20% military discount on top of that. They also don't advertise that discount clearly so you can choose the free trial or the military discount. Also if you choose to cancel before the free trial is finished, you immediately lose access instead of it lapsing at the end of the trial. That is a ridiculous and archaic model.
9 people found this review helpful
Did you find this helpful?
NaturalCycles AG
May 13, 2026
Hi Joann, We appreciate that you took the time to share your perspective with us as we are always looking for ways to improve. We're sorry to hear you're feeling this way. If you have any further questions, we would love to help out. Please reach out to us via help.naturalcycles.com Kind regards, NC°

What’s new

A few polishes for a better experience.