Monitor birth control, planned pregnancy, period tracking, and more. By utilizing our cutting-edge basal body temperature tracker, you can view your personalized fertile windows and ovulation periods.
About Natural Cycles Birth Control app
● Natural contraception trusted by over 2.5M women
● Providing natural contraception and fertility tracking for 10+ years
● Trusted for natural family planning
● #1 birth control and ovulation tracker in the US
● The first FDA cleared birth control app
● Best Birth Control app by Healthline and Bestapp.com
How to use Natural Cycles
Measure your temperature
Choose your device and measure either overnight or in the morning.
Open the Natural Cycles° app
The algorithm behind the app is analyzing your body temperature.
Confirm your fertility status
At a glance, know if today is a Green Day (not fertile) or a Red Day (use protection).
How Natural Cycles algorithm works:
Not only can we confirm ovulation but we can predict it, based on your unique cycle. Here's how our algorithm works:
1. Your cycle starts on the first day of your period. Most of us aren’t fertile at this time so you will get Green Days.
2. As ovulation approaches you enter the fertile window. Now the algorithm gives only Red Days since there is a risk of pregnancy.
3. After ovulation your temperature rises, as you are no longer fertile. The algorithm will give you Green Days once again.
4. The amount of Green Days you get will increase over time as the algorithm gets to know your cycle better and better.
Benefits of using the Natural Cycles° app
● Personalized period calendar & menstrual cycle tracker
● 100% hormone-free contraception
● Measure your temperature using your Oura Ring, NC° Bluetooth thermometer, or Apple Watch.
● Monitor your body & baby throughout pregnancy
● Track your mood, sex drive, PMS & pain
● Receive daily insights into fertility and ovulation patterns
● Multiple languages supported: English, Spanish, Swedish, and more
● Cutting-edge adaptive technology
● Private & secure
Inside the Natural Cycles° app
✔ View your fertility status
It's easy to see if today is a Green or Red Day so you know if you need to use protection.
✔ Track and learn more
Monitor emotional and physical symptoms to learn about the changes in your body.
✔ See the bigger picture
Spot patterns and compare previous cycles with your graph view.
✔ Adapt your fertility journey
Smoothly switch between preventing or planning pregnancy at no extra cost.
Plan or prevent your pregnancy with 100% hormone-free, FDA-cleared Natural Cycles Birth Control with zero side effects. Take our quiz and find out if it's for you today!