The world's first birth control app
🏅 FDA Cleared + CE Marked
🎯 93% Effective with Typical Use
âś… 100% Hormone Free
How to use Natural Cycles
1
Measure your temperature and add data
When you wake up, measure your temperature using your basal thermometer and add the reading into the NC° app.
2
Wait for the algorithm to calculate your fertility
Our algorithm uses temperature, period, and cycle data to quickly see if today is green (not fertile) or red (use protection).
3
Know your fertility and take control of your cycle
Your daily fertility status can be used to plan or prevent pregnancy. Plus, you’ll receive tailored insights into your own unique cycle.
App Store
Google Play
Supporting
3 million
Cyclers over 10 years