Depending on your device, you can either measure overnight or in the morning.
Let’s compare birth control effectiveness
HORMONAL
HORMONAL
93%
Contraceptive Pill
93%
Vaginal Ring
99%
Hormonal IUD
NON-HORMONAL
93%
Natural Cycles°
87%
Male Condom
99%
Copper IUD
NON-HORMONAL
Percentage of typical users who did not get pregnant with the method over 1 year of use. Read more.
Read reviews from Natural Cycles users
What a wonderful tool that I have enjoyed using since day 1. It is definitely worth the effort! I have a regular cycle and so this was extremely helpful in preventing a pregnancy for 2 1/2 years. Then it only took two months to conceive when we decided we were ready, with lots of help from this app. Thank you Natural Cycles!
AbsieStav App Store
I learnt so much about myself, my body and my cycle whilst on natural cycles! Even as a 23 year old woman I was learning things no school nurse ever taught me! It was really empowering to know about my cycles and allowed me to understand that my body is amazing and does great things and I need to take care of it.
macabel12 App Store
This app has helped me to understand my body so much better. Before using this app,I did not know when the first day of my cycle was, how long my cycle was, when I ovulated, etc. Its given my self care a definite boost x
Lauren S Google Play Store
What a wonderful tool that I have enjoyed using since day 1. It is definitely worth the effort! I have a regular cycle and so this was extremely helpful in preventing a pregnancy for 2 1/2 years. Then it only took two months to conceive when we decided we were ready, with lots of help from this app. Thank you Natural Cycles!
AbsieStav App Store
I learnt so much about myself, my body and my cycle whilst on natural cycles! Even as a 23 year old woman I was learning things no school nurse ever taught me! It was really empowering to know about my cycles and allowed me to understand that my body is amazing and does great things and I need to take care of it.
macabel12 App Store
This app has helped me to understand my body so much better. Before using this app,I did not know when the first day of my cycle was, how long my cycle was, when I ovulated, etc. Its given my self care a definite boost x
Lauren S Google Play Store
What a wonderful tool that I have enjoyed using since day 1. It is definitely worth the effort! I have a regular cycle and so this was extremely helpful in preventing a pregnancy for 2 1/2 years. Then it only took two months to conceive when we decided we were ready, with lots of help from this app. Thank you Natural Cycles!
AbsieStav App Store
Get to know the app
Sync data & view your fertility status
Understand your unique menstrual cycle
Read tailored updates & messages
Get guides, quizzes, blog posts & more
Adapt your journey
Sync data & view your fertility status
Understand your unique menstrual cycle
Read tailored updates & messages
Get guides, quizzes, blog posts & more
Adapt your journey
Sync data & view your fertility status
Understand your unique menstrual cycle
Read tailored updates & messages
Get guides, quizzes, blog posts & more
Adapt your journey
Featured in
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.
