Birth control built around you

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

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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

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%

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

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

Your period is just one aspect of the menstrual cycle. During your cycle, hormones in your body cause the lining of your uterus to thicken – which happens so that if you get pregnant, the fertilized egg cell can implant into your uterine lining 🥚 ⁠
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Around the mid-point of your cycle, an ovary releases an egg cell, this process is called ovulation. This egg moves down your fallopian tubes and waits for a sperm cell to fertilize it ⏳ If that happens, and the cell successfully implants into the uterine wall, then it results in pregnancy 🫄 And if an egg isn’t fertilized, your body breaks down the thickened lining of your uterus and sheds it, resulting in your period — and thus a new cycle begins 🩸⁠
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Your menstrual cycle, then, describes this series of events as your body prepares for the release of an egg and its potential fertilization, followed by menstruation if there’s no successful fertilization.

There are many decisions that motivate our choice in contraceptives. Therefore, there is no ‘best birth control method’, only the one that suits each individual best, and this often changes throughout our individual fertility journeys 💜 Every woman is looking for different benefits in her birth control, whether she prioritizes a non-hormonal method, a method that protects against sexually transmitted infections, or wants an option she doesn't need to think about every day 💭 The most important thing is that there are accessible options so each woman can find a birth control option that best provides what she needs out of it 💪⁠
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NC° is just one FDA Cleared option that we ensure is available over the counter 📲⁠
⁠
Frederiksen, Brittni, et al. “Women’s Sexual and Reproductive Health Services: Key Findings from the 2020 KFF Women’s Health Survey.” KFF, 21 Apr. 2021, www.kff.org/womens-health-policy/issue-brief/womens-sexual-and-reproductive-health-services-key-findings-from-the-2020-kff-womens-health-survey/.

We love to see it 🙌⁠
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You can check yourself at any time, but we recommend doing a breast self-check three to five days after your period ends 🩸 Our community of Cyclers gets a reminder in the Natural Cycles app at the optimal time to carry out a breast self-exam, which is typically a few days following your period 📳⁠
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As your period ends, your hormone levels can change, which may impact the size and feel of your breasts. During this time, the breasts are less likely to be swollen or tender from PMS symptoms, and we’re less sensitive to pain, which makes it a great time to do a self-exam ✋ Since everyone’s body is different, it's best to check when they're feeling normal for you 💜⁠
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Follow the link in our bio to learn more about how to use the Natural Cycles Partner View 🔗

...but new research suggests many don’t feel comfortable speaking openly about their experiences. Follow the link in our bio to read the full article 🔗

“3 Million Women Have Taken a Period-Related Sick Day over the Last Year, New Research Shows.” Stylist.co.uk, 2024, www.stylist.co.uk/health/women/period-sick-days-shame/861250.

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.

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.