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Is Natural Cycles° right for you?

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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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%

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

Protecting user’s information has always been a top priority 🔒 Natural Cycles has a comprehensive data privacy protection program called NC° Secure, which is included with every Natural Cycles subscription. The program includes advanced data protection, including encryption and pseudonymization, to keep your data secure 💪 It’s important to keep in mind that you always own your data and have the power to control how it’s used.⁠
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As part of NC° Secure, you also have the option to Go Anonymous if you need an extra layer of protection for your identity, for example, if your data is at an increased risk. If you Go Anonymous, your personal identifying information will be separated from your fertility data, which means that no one — not even us at Natural Cycles — can link your NC° data to you 🔐 You will be able to see a badge and text saying that your data is anonymized in the My account and Settings pages 📲Tracking and monitoring your cycles gives you a lot of information 🤓 Natural Cycles offers detailed insights into your unique cycle, which can be used to answer some important medical questions associated with reproductive and sexual health 🧑‍⚕️ 💜 Follow the link in our bio to learn more 🔗These days, it is becoming more common for individuals to take birth control pills without taking sugar pills or a break between pill packets. However, the accepted normality of the withdrawal bleed — and the misconceptions around it — is a stark reminder of the ways in which reproductive rights have been constrained and influenced by more factors than simply our own well-being. Follow the link in our bio to learn more 🔗Natural Cycles is grounded in science, from our origin story to the regulated processes we follow every day 🧑‍🔬 Our mission at Natural Cycles is to pioneer women’s health with research and passion – by empowering every woman with the knowledge that she needs to take charge of her health 💪💜

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.