Contraception built around you.
A FDA Cleared non-hormonal, non-invasive way to take control of your fertility.
How it works
Choose a device
Use our free thermometer when you sign up. Or sync our app with your Apple Watch or Oura Ring.
Take your temperature
Use your chosen device to take your temperature right when you wake up.
Open the Natural Cycles app
The app shows you your fertility status, cycle trends, and helpful insights.
How effective are other forms of birth control?
NON-HORMONAL
Natural Cycles°
93%
Copper IUD
99%
Condom
87%
HORMONAL
Hormonal IUD
99%
Vaginal Ring
93%
Contraceptive Pill
93%
Let's get to know you.
What's your fertility goal?
Backed by science, the Natural Cycles° algorithm is powered by your body temperature.
Inside the app
Unlock
Our FDA Cleared algorithm uses your temperature to identify fertile and non-fertile days.
Track
Log mood, energy, and more to see how your cycle impacts you.
Learn
Customized insights and expert content to help you understand your unique experience.
Hear directly from Cyclers like you
40K+ ratings in the App store
Michelle
I feel empowered knowing about my body’s natural processes.
Bethany
I’ve experienced significantly less pelvic pain... and our intimacy couldn’t be better.
Dr. Katara
Has got to be THE best natural birth control on the market. 10/10 recommend!
Shadow
NC° helped me understand my body, cycle, and the best time of the month to get pregnant.
Katie
Nothing short of amazing! We just welcomed our baby girl thanks to NC° 🥰
Join Our Community
#NaturalCycles
Follow usCommon 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.