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 effectiveness
HORMONAL
HORMONAL
93%
Contraceptive Pill
93%
Vaginal Ring
99%
Hormonal IUD
NON-HORMONAL
93%
Natural Cycles°
87%
Condom
99%
Copper IUD
NON-HORMONAL
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 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.
Hear from our community
The science ofyour cycle
Natural Cycles birth control is based on biology. Discover the science behind this method, and what makes us certified.
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
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.