The only FDA Cleared birth control app: Temperature-based contraception that’s free from hormones and side effects.
Introducing NC° Birth Control
- No hormones or side effects
- FDA Cleared as contraception
- Adapts to your cycle
About Natural Cycles
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.
Millions of journeys, each one unique
Natural Cycles is the only app to be FDA cleared as birth control. Natural and non-invasive we offer a brand new, revolutionary birth control option that’s given millions of individuals the power to go hormone-free.
Elina’s story: Why I built the first birth control app
It sounds counterintuitive to many, but I actually came up with the idea for Natural Cycles birth control when starting to think about planning my own pregnancy. At the time, I was working as a particle physicist at CERN (European Organization for Nuclear Research) and my husband and I were starting to talk about our future family.
I had been using a birth control implant throughout most of my twenties after a negative experience with the birth control pill. While the implant worked quite well, I knew we wanted to start trying in a year or two so I wanted to remove it. In addition to it being invasive, I also wanted to take a break from hormonal birth control to give my body a chance to get back to its natural state well before a pregnancy.
I quickly realized I was extremely limited when it came to finding a regulated birth control option that was both non-invasive and non-hormonal. As a particle physicist and researcher, I decided to take things into my own hands so I developed Natural Cycles, the first FDA cleared birth control app. The app analyzes a woman’s body temperature to determine when she ovulates and when she is and isn’t fertile. After my own struggle to find a natural, effective contraception, I’m proud to share Natural Cycles with thousands of women around the world.
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Science is at the heart of what we do
Natural Cycles is grounded in science, from our origin story to the regulated processes we follow every day. Our in-house Medical, Algorithm, and Data Team is made up of fertility experts, physicists, and data scientists. We are constantly looking for ways to enrich the field of female health, collaborating with academics, scientists, and doctors around the world. Do you share our mission?
We are scientists, feminists, friends and Cyclers too
The Natural Cycles Team is made up of people from over 20 different countries with backgrounds in everything from astrophysics to creative writing. Together we share a passion for science, data and female health.
With a caring and supportive culture, we’re proud to be part of a predominantly female team working for something we really believe in.
How does Natural Cycles work?
Backed by science, the NC° algorithm is powered by body temperature.
How to use Natural Cycles
Measure your temperature
Choose your device and measure either overnight or in the morning.
Open the NC° app
The algorithm behind the app is analyzing your body temperature.
Confirm your fertility status
At a glance, know if today is a Green Day (not fertile) or a Red Day (use protection).
Body temperature and the cycle
Our hormones cause body temperature to rise around ovulation. By analyzing this we can pinpoint where you are in your cycle.
A method that’s tailored to you
Not only can we confirm ovulation but we can predict it, based on your unique cycle.
See how the algorithm works:
- Your cycle starts on the first day of your period. Most of us aren’t fertile at this time so you will get Green Days.
- As ovulation approaches you enter the fertile window. Now the algorithm gives only Red Days since there is a risk of pregnancy.
- After ovulation your temperature rises, as you are no longer fertile. The algorithm will give you Green Days once again.
- The amount of Green Days you get will increase over time as the algorithm gets to know your cycle better and better.
Inside the NC° app
View your fertility status
It’s easy to see if today is a Green or Red Day so you know if you need to use protection.
Track and learn more
Monitor emotional and physical symptoms to learn about the changes in your body.
See the bigger picture
Spot patterns and compare previous cycles with your graph view.
Adapt your fertility journey
Smoothly switch between preventing or planning pregnancy at no extra cost.
Prevent pregnancy with Natural Cycles
- 100% Hormone-free
- Zero side effects
- FDA Cleared
Is Natural Cycles effective?
While no method of birth control is 100% effective, Natural Cycles is 93% effective with typical use and 98% effective with perfect use.
HORMONAL:
- 93% Contraceptive Pill
- 93% Vaginal Ring
- 99% Hormonal IUD
NON-HORMONAL
- 93% Natural Cycles°
- 87% Male Condom
- 99% Copper IUD
