When you use Natural Cycles perfectly, the birth control app is 98% effective. Perfect use means using condoms or abstaining from sex on red days (when you’re fertile).Read more about effectiveness
Get to know your body with a hormone-free birth control app, so you can prevent pregnancy on your own terms.
Natural Cycles is the first and remains the only app to be cleared by the US FDA for the use of birth control. The app is also the only app to be CE marked in Europe.