Introducing the first and only birth control app
Discover hormone-free birth control that’s side-effect-free.
Switch to the first and only FDA cleared and CE marked birth control app.
Learn the unique pattern of your cycle with tailored updates and insights
Let's compare birth control methods
Percentage of typical users who did not get pregnant with the method over 1 year of use. Source.
Wake up. Measure. Add data. Know your fertility.
Reach for the Natural Cycles thermometer as soon as you wake up.
Our community of Cyclers are always at the heart of what we do
Backed by science and passionate about our mission in women’s health
We’re proud to carry out research, work with medical partners and publish studies that bust myths and shed new light in the under-researched area of women’s health.
Prevent pregnancy today, plan for tomorrow…
Natural Cycles can also be used to plan a pregnancy. If and when the time is right you can use the same science to start a family.
Get started with Natural Cycles today
Certified medical device
Unique and adaptable
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.