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How does it work?
You can only get pregnant 6 days each cycle. The algorithm behind the NC° app uses body temperature to find these days.
The algorithm learns the pattern of your cycle, giving a daily fertility status, so you can prevent pregnancy hormone-free!
What do I need to do?
Measure your temperature
Open the NC° app
Confirm daily fertility status
How does Natural Cycles compare to other methods?
HORMONAL
HORMONAL
93%
Contraceptive Pill
93%
Vaginal Ring
99%
Hormonal IUD
NON-HORMONAL
93%
Natural Cycles°
87%
Condom
99%
Copper IUD
NON-HORMONAL
Percentage of typical users who did not get pregnant with the method over 1 year of use. Read more.
Common questions
Yes, you can now use your Apple Watch with Natural Cycles as long as your watch has a temperature sensor (Apple Watch Series 8 and higher). Just sign up, download the NC° app, and connect your watch in the "My Device" page.
If you already have an Oura Ring, you can connect it to the NC° app in the “My Device” page. If you don’t have a ring, purchase your Natural Cycles subscription, download the NC° app, and visit the “Buy extra supplies” page to claim your exclusive discount on an Oura Ring purchase.
Once you sign up for Natural Cycles you’ll be able to access your exclusive discount on a brand new Oura Ring.
Natural Cycles is powered by an algorithm that analyzes daily hormone-driven temperature changes to confirm each day if you are fertile and need to use protection (Red Day) or if you’re not fertile (Green Day).
Yes! The Natural Cycles algorithm can also be used to plan pregnancy faster. You can switch from NC° Birth Control to NC° Plan Pregnancy mode at any time within the app.
Your journey starts today
You must be over the age of 18.Does not protect against STIs.
FDA Cleared
Natural Cycles is 93% effective with typical use, 98% effective with perfect use. No method of contraception is 100% effective. Natural Cycles does not guarantee that you cannot get pregnant, it only informs you whether and when you can become pregnant based on the information that you enter into the application.