NC° Birth Control

Prevent pregnancy with Natural Cycles

100% Hormone-free

Zero side effects

FDA Cleared

Take the quiz and find out if it's for you!
Not fertile mobile screen on table

Is Natural Cycles effective?

While no method of birth control is 100% effective, Natural Cycles is 93% effective with typical use and 98% effective with perfect use.

Let’s compare methods



A package of contraceptive pills


Contraceptive Pill

Illustration of a Vaginal Ring


Vaginal Ring

Hormonal IUD


Hormonal IUD


Phone with the Natural Cycles app and thermometer


Natural Cycles°

illustration of a male condom


Male Condom

copper iud illustration


Copper IUD


Percentage of typical users who did not get pregnant with the method over 1 year of use.Read more.

Take our birth control quiz
Are you able to wear a measuring device while you sleep or measure your temperature when you wake up?
Are you 18 years of age or older?
Choose the primary birth control method you are currently using:
Have you ever experienced any side effects from birth control?
Do you work night shifts or does your sleep schedule change significantly?
Do you have children?
Are you currently breastfeeding?
Are you looking to become pregnant in the next few years?
Do you like learning about your body?
How long are your menstrual cycles normally?
Do you have 
any of the following?
Do you have symptoms of menopause?
Are you and your partner willing to abstain from sex or use condoms on fertile days?
Do you value having a daily routine?

Sign up for our mailing list today and get 10% off Natural Cycles

Woman holding up Natural Cycles app

Going hormone-free

Join the birth control revolution

With 3 million registered users, a growing number of us are choosing to go hormone-free! Are you ready to start your journey?

Woman in bed measuring with Natural Cycles

Your routine

Measure your way

We recommend measuring temperature at least 5 times per week - you can choose to measure overnight or in the morning.

Illistration避孕方法包括natural cycles, condoms, shot, pills, ring, IUD and implant

Switching birth control

Know how to get started

Whether you’re switching from a hormonal or non-hormonal method, we’re here to guide you on your journey of self-discovery.

Discover Natural Cycles° today