Natural Cycles is certified for use as birth control and helps you keep track of your ovulation, period and fertility.
The app will show you when to use protection to effectively prevent a pregnancy. It is clinically tested to be 99.5% effective*.
*Natural Cycles has a method failure Pearl Index of 0.5, which means that 5 women out of 1000 get pregnant during one year due to a falsely attributed green day. Natural Cycles has a typical-use Pearl Index of 7.0, which means that in total 7 women out of 100 get pregnant during one year due to all possible reasons (e.g. having unprotected sex on red days, failure of the contraceptive method used on red days).
Natural Cycles analyses your temperature, period and ovulation to calculate when you are fertile and should use birth control (e.g. condoms). Our algorithm is the brains behind the app. It takes care of all the complex calculations and tells you everything you need to know about your cycle.
How it works:
Measure your temperature first thing in the morning before you get out of bed. You will need a two decimal basal thermometer to do so.
Enter your measurement and other data such as period, sex and LH test results into the app.
Check your daily status. A green day means you are not fertile and cannot get pregnant. A red day means that you are very much likely to be fertile which is why you should use protection.
Maker sure to read the instructions of use before you get started.
For the app to effectively work as a birth control, you should be comfortable with using protection such as condoms on red days.
In the beginning, the app will be getting to know your unique cycle, so you will have more red days - this is to ensure effectiveness. Once you’ve measured for a while you can get as little as 6 red days in one cycle.
Natural Cycles does not protect against sexually transmitted diseases (STDs).
Planning a pregnancy:
Natural Cycles goes beyond contraception. Our ‘Plan a pregnancy’ mode lets you know when you are most fertile and time your sex to increase your chances of conceiving.
The app will let you know when it’s best to take a pregnancy test. Once a positive test is entered into the app, it switches colours and your features change. You will now be able to track the development of your pregnancy. You can easily switch back to "contraception mode".
- Red and green days to tell you exactly when you should use protection.
- Ovulation calculator and detector
- Intuitive data entry – temperature, ovulation test results, period
- Interactive calendar showing your current and upcoming fertility status
- Personalised fertility predictions up to 5 cycles in advance
- Informative graph view
- Statistics from your cycles and fertility
- Integration with Apple Health app
‘Plan a pregnancy’ mode:
- Personal fertility scale to pinpoint the optimal days to conceive
- Pregnancy detector
- Information about your baby’s development
Natural Cycles includes In App purchases for the auto-renewable subscription to the application. After a free trial, the user can choose to pay a monthly fee or a yearly fee. If the users chooses to pay for a year directly, before the end of the free trial, a basal thermometer is included in the price. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. The account will then be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period.
For US customers only: Natural Cycles is only certified for contraception in Europe. In the US, Natural Cycles is intended to be used for fertility monitoring.