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
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
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Join Our Community

#NaturalCycles

Yikes 😬 couldn't be me !!⁠ ⁠ Natural Cycles is the first and ✨only✨ app of its kind cleared by the FDA as birth control. Most other fertility apps assume your cycle is 28 days long 🫣 This means the fertile window they predict is not personalized to your cycle.⁠ ⁠ Our algorithm significantly reduces the risk of you receiving an incorrect fertility status since it uses your unique temperature data, which reduces the risk of unwanted pregnancy and can even help you plan for pregnancy with greater precision 🔍⁠ ⁠ Natural Cycles is 93% effective with typical use, 98% effective with perfect use 💪In short, the effectiveness of Natural Cycles remains the same whether you use an oral basal thermometer, the Oura Ring, or the Apple Watch. Natural Cycles is 93% effective with typical use and 98% effective with perfect use 💪⁠ ⁠ Natural Cycles has been clinically validated for use with all three measuring devices, so focus on finding the best fit for your routine and preferences 🌡️⌚️💍 Follow the link in our bio to learn more about our compatible measuring devices 🔗Your fallopian tubes are one of the crucial parts of your reproductive system - but how often do you give them any thought? 👀 Follow the link in our bio to learn more about the small but mighty fallopian tubes 🔗Cervical mucus is a substance that forms in the cervix and is discharged through the vagina. It’s also known as cervical fluid or discharge. The amount and consistency of the cervical mucus changes throughout the menstrual cycle, and it's closely linked to fertility 💧⁠ ⁠ You can easily track your cervical mucus with the Natural Cycles app 📲 Follow the link in our bio to 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.