How does Natural Cycles work?
Backed by science, the NC° algorithm is powered by body temperature.
![Woman holding Natural Cycles App](https://www.datocms-assets.com/21281/1706257723-how_does_it_work_hero.jpg?auto=format,compress&dpr=0.25&w=2160)
How to use Natural Cycles
Measure your temperature
![woman sleeping with Natural Cycles](https://www.datocms-assets.com/21281/1708687611-image-1.jpg?auto=format&dpr=0.51&w=1392)
Choose your device and measure either overnight or in the morning.
Open the NC° app
![woman looking at her data with Natural Cycles](https://www.datocms-assets.com/21281/1708687631-image2.jpg?auto=format&dpr=0.51&w=1392)
The algorithm behind the app is analyzing your body temperature.
Confirm your fertility status
![Woman holding Natural Cycles app in her hands](https://www.datocms-assets.com/21281/1708687655-image3-1.jpg?auto=format&dpr=0.51&w=1392)
At a glance, know if today is a Green Day (not fertile) or a Red Day (use protection).
Body temperature and the cycle
Our hormones cause body temperature to rise around ovulation. By analyzing this we can pinpoint where you are in your cycle.
A method that’s tailored to you
Not only can we confirm ovulation but we can predict it, based on your unique cycle.
Inside the NC° app
![not fertile](https://www.datocms-assets.com/21281/1714569740-not_fertile.png?auto=format&w=516)
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.
![Temperature Screen](https://www.datocms-assets.com/21281/1714569793-en_app_temp.png?auto=format&w=516)
Track and learn more
Monitor emotional and physical symptoms to learn about the changes in your body.
![NC Graph](https://www.datocms-assets.com/21281/1703187102-graph-new.png?auto=format&w=1372)
See the bigger picture
Spot patterns and compare previous cycles with your graph view.
![all Natural Cycles plans](https://www.datocms-assets.com/21281/1714570135-post_partum_en.png?auto=format&w=524)
Adapt your fertility journey
Smoothly switch from preventing to planning, pregnancy, and postpartum, NC° supports you every step of the way.