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

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 🔗Summertime is just about here !! 🏊🤿⁠ ⁠ Worried about leaving a bloody trail in the water behind you? 🩸 The good news is that the water pressure in both the swimming pool and the sea often temporarily stops your menstrual flow while you swim 🛑⁠ ⁠ Your period doesn’t stop while you’re swimming, but the water pressure can stop menstrual blood from flowing out as you swim. If there are any changes in abdominal pressure – such as if you sneeze, laugh or cough – then some blood may be pushed out 👋⁠ ⁠ However, there’s no need to worry if you’re swimming in a pool as the volume of water is so large, so if a small amount of period blood does escape into the water, it’ll be diluted and unlikely to be seen by other swimmers 💧 Follow the link in our bio to learn more 🔗In the animal kingdom, reproduction is often closely linked to the seasons 🗓️ Many animals time their mating so that they give birth in the spring or summer months when the weather is better and there’s more food available 🌤️ This makes a lot of sense as timing reproduction when the weather is best means offspring have the best chance of survival.⁠ ⁠ Because we human beings are able to control our own habitat, we’re not as affected by seasonal changes. In addition, we also have access to birth control which gives us further power over our reproduction. ⁠ ⁠ However, previous research has indicated that human reproduction might still be affected by seasonal changes, with conception rates being higher in the spring and summer 🌻 Follow the link in our bio to learn more 🔗⁠ ⁠ Shanmugam, Divya, et al. “A Multi-Site Study of the Relationship between Photoperiod and Ovulation Rate Using Natural Cycles Data.” Scientific Reports, vol. 13, no. 1, 24 May 2023, www.ncbi.nlm.nih.gov/pmc/articles/PMC10209102/, https://doi.org/10.1038/s41598-023-34940-z. Accessed 13 Oct. 2023.⁠What'd we miss? 🤸 What excites you the most since making the switch? 📲
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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.