Contraception built around you.

An 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.

NC Devices
Measure with NC
Holding NC App
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Let's compare birth control effectiveness

NON-HORMONAL


Natural Cycles°

A phone with the nattural cycles app

93%

Condom

illustration of a male condom

87%

Copper IUD

Copper iud

99%

HORMONAL


Contraceptive Pill

A package of contraceptive pills

93%

Vaginal Ring

the contraceptive ring

93%

Hormonal IUD

The hormonal IUD

99%

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

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Is Natural Cycles° right for you?
Natural Cycles

Backed by science, the Natural Cycles° algorithm is powered by your body temperature.


Inside the app

unlock

Unlock

Our FDA Cleared algorithm uses your temperature to identify fertile and non-fertile days.

trackers

Track

Log mood, energy, and more to see how your cycle impacts you.

ovulation prediction

Learn

Customized insights and expert content to help you understand your unique experience.

Hear directly from Cyclers like you

4.8

40K+ ratings in the App Store

Michelle

Michele

I feel empowered knowing about my body’s natural processes.

NC° Birth Control

Bethany

Bethany

I’ve experienced significantly less pelvic pain... and our intimacy couldn’t be better.

NC° Birth Control

Dr. Katara

Dr. Katara

Has got to be THE best natural birth control on the market. 10/10 recommend!

NC° Birth Control

Shadow

Shadow

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

NC° Plan Pregnancy

Katie

Katie and her family

Nothing short of amazing! We just welcomed our baby girl thanks to NC° 🥰

NC° Plan Pregnancy

Join Our Community

#NaturalCycles

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Common questions

You must be over the age of 18.Does not protect against STIs.

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.