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

background

Let's compare birth control effectiveness

NON-HORMONAL

Natural Cycles°

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.

Let’s get started

fertility background

Is Natural Cycles° right for you?

Let's get to know you

What can we help you with?

Prevent pregnancy Prevent now, plan later Get pregnant faster Track my pregnancy Recover from childbirth Haven't decided yet

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.

Bethany

Bethany

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

Dr. Katara

Dr. Katara

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

Shadow

Shadow

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

Katie

Katie and her family

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

Join Our Community

#NaturalCycles

Ovulation is the release of a mature female egg cell from an ovary which typically happens once during each menstrual cycle 🥚 The egg cell lives for up to 24 hours after being released. If it’s not fertilized, the egg cell dies and the menstrual cycle progresses to the next phase ✨ Follow the link in our bio to learn more about this important phase in the menstrual cycle and where it fits into the larger picture of planning or preventing pregnancy 🔗

Follow the link in our bio to learn more 🔗

Breast pain that’s related to the menstrual cycle typically happens during the luteal phase (the phase after ovulation), as you’re approaching your period 🩸 Premenstrual breast pain is very common – it’s actually one of the top PMS symptoms – and one study found it affects up to 70% of women. Follow the link in our bio to learn more about common symptoms, what you can do about it, and when to see a doctor 💜🔗

While you don’t need to clean your vagina, you can safely and effectively clean your vulva daily – simply rinsing with warm water usually does the trick 💧 Unfortunately, there are many myths about vaginal health and hygiene that overcomplicate this simple, proven cleansing method. Follow the link in our bio to learn more 🔗

Common questions

What’s the difference between Natural Cycles and other fertility apps?

How do I get started?

How much does it cost to use Natural Cycles?

Is Natural Cycles effective birth control?

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.