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Your data is always protected

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Best Birth Control App by Healthline badge

Best Birth Control App by

Introducing NC° Birth Control

No hormones or side effects

FDA Cleared as contraception

Adapts to your cycle

Let's compare birth control effectiveness



A package of contraceptive pills


Contraceptive Pill

the contraceptive ring


Vaginal Ring

The hormonal IUD


Hormonal IUD


A phone with the nattural cycles app


Natural Cycles°

illustration of a male condom



Copper iud


Copper IUD


Percentage of typical users who did not get pregnant with the method over 1 year of use. Read more.

Take our quiz to find out if Natural Cycles works for you!

What’s your goal?

Measure. Open the app. Confirm your fertility status.

Use the Oura Ring with the NC° app

Wear your Oura Ring to bed and let it measure while you sleep


Hear from our community

image of lexi


Cycler since March 2021

To me Natural Cycles is not just hormone-free birth control, it is also one of the greatest tools I’ve come across to help me learn about my body.

Read story

The science of your cycle

Natural Cycles birth control is based on biology. Discover the science behind this method, and what makes us certified.

Woman showing her Natural Cycles app to her partner.

You can also plan pregnancy

Natural Cycles is with you every step of your fertility journey. If you’re ready to start a family just switch to NC° Plan Pregnancy.

Common questions

NC Secure

Your data is always protected 🔒

You must be over the age of 18. Does not protect against STIs.

FDA Cleared

Natural Cycles is 93% effective with typical use, 98% effective with perfect use. No method of contraception is 100% effective. Natural Cycles does not guarantee that you cannot get pregnant, it only informs you whether and when you can become pregnant based on the information that you enter into the application.