Birth control built around you

An FDA Cleared, non-hormonal, non-invasive way to take control of your fertility.

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Designed to keep your data safe
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Save up to 55% with NC° Annual Plan
4.8Star IconApp Store

57.7K+ Global Ratings
Is Natural Cycles° right for you?

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What can we help you with?

Prevent pregnancyPrevent now, plan laterGet pregnant fasterTrack my pregnancyRecover from childbirthHaven't decided yet

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°

Natural Cycles App

93%

Copper IUD

Copper IUD

99%

Condom

Condom

87%

HORMONAL

Hormonal IUD

Hormonal IUD

99%

Vaginal Ring

Vaginal Ring

93%

Contraceptive Pill

Contraceptive pills

93%

Reference: Contraceptive Technology (Table 26 - 1). 21st Edition, 2018

Get started
Natural Cycles

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

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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

4.8

57.7K+ ratings in the App Store

Michelle

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

NC° Birth Control

Bethany

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

NC° Birth Control

Dr. Katara

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

NC° Birth Control

Shadow

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

NC° Plan Pregnancy

Katie

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

NC° Plan Pregnancy
See more

Join Our Community

#NaturalCycles

There are many physical and emotional changes that can signal that your period is on the way, including tender breasts, mood changes, and tiredness 😵‍💫 While we all experience symptoms differently, most women start to notice these symptoms between one and two weeks before they get their period 🩸⁠ ⁠ If you’re using Natural Cycles as birth control, you’ll get regular updates about the changes happening in your cycle, including when your period is due 📲 NC° Birth Control has two parts: an app and a measuring device (like a thermometer, or compatible wearable like an Oura Ring, or Apple Watch). ⁠ ⁠ The app learns the pattern of your cycle based on the science of body temperature 🌡️ It’s possible to measure ovulation with temperature readings, and that’s how Natural Cycles can identify where you are in your cycle 🔍 So, as well as learning the signs your period is coming, by noticing changes in your body, you’ll get in-app updates, too! 📳IYKYK 💜🤭Have you ever wondered about the different types of vaginal discharge? 💭 From cervical mucus to menstrual blood, there’s plenty going on down there every cycle. There are many normal discharge types, as well as some fluids that can be a cause for concern. Follow the link in our bio to check out the full article & learn more 🔗
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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.