The only FDA Cleared birth control app
Temperature-based contraception that's free from hormones and side effects.
Join 3 million+ users worldwide

I feel empowered knowing about my body’s natural processes.
Michelle
Joined NC° in 2022

I’ve experienced significantly less pelvic pain... and our intimacy couldn’t be better.
Bethany
Joined NC° in 2023

Has got to be THE best natural birth control on the market. 10/10 recommend!
Dr. Katara
Joined NC° in 2021

NC° helped me understand my body, cycle, and the best time of the month to get pregnant.
Shadow
Joined NC° in 2019

Nothing short of amazing! We just welcomed our baby girl, all thanks to NC°.
Katie
Joined NC° in 2022
Natural Cycles can help youplan pregnancy

This week
Predictions can change

Ovulation predicted

Natural Cycles can help youtrack symptoms







Natural Cycles can help youunlock insights
13 September 2023
Hello, green days!
15 September 2023
Tips on PMS

Common questions
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.