Place the thermometer under your tongue and measure your temperature as soon as you wake up.
Enter your temperature into the app. Natural Cycles’ smart algorithm analyzes your data.
The app will tell you if it's a red or a green day and whether or not you need to use protection to prevent pregnancy.
Hormone-free and non-invasive.
Take your temperature as soon as you wake up in the morning and let Natural Cycles’ smart algorithm analyze your data.
FDA cleared in the US and CE marked in Europe.
The first digital method of birth control available in both the US and Europe.
The first month is free, this gives you the chance to explore the app before you decide if you want to subscribe.