Introducing NC° Birth Control

Discover non-hormonal birth control that’s side-effect-free

Switch to the only FDA Cleared and CE marked birth control app

Learn the unique pattern of your cycle with tailored updates and insights

Let's compare birth control methods



A package of contraceptive pills


Contraceptive Pill

Illustration of the Vaginal Ring


Vaginal Ring

hormonal iud illustration


Hormonal IUD


Phone with the Natural Cycles app and thermometer


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. Add data. Know your fertility.

Use NC° with an Oura Ring

You can now measure overnight! Wear the ring to bed, and let it measure while you sleep. No need to set an alarm, the data syncs automatically.


Our community of Cyclers are always at the heart of what we do

Backed by science and passionate about our mission in women’s health

We’re proud to carry out research, work with medical partners and publish studies that bust myths and shed new light in the under-researched area of women’s health.

Woman showing her Natural Cycles app to her partner.

Prevent pregnancy today, plan for tomorrow…

Natural Cycles can also be used to plan a pregnancy. If and when the time is right you can use the same science to start a family.

Common questions

NC Secure

Your data is always protected 🔒

Take control

Go hormone-free with certified birth control

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.