Natural Cycles, Contraception

Natural Cycles, Contraception

By NaturalCycles Nordic AB

Score: 5
From 1,523 Ratings


Natural Cycles is certified for use as contraception 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 contraception (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 likely to be fertile and should use protection. Make sure to read the instructions of use before you get started. For the app to effectively work as a contraceptive, you and your partner should be comfortable with using protection such as condoms on red days. Natural Cycles does not protect against sexually transmitted diseases (STDs). Planning a pregnancy: Natural Cycles goes way beyond contraception. With our ‘Plan a pregnancy’ mode you can get to 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. Once you’ve given birth you can easily switch to Natural Cycles ‘Prevent’ mode as a contraceptive. KEY FEATURES - 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 and reliable fertility predictions up to 5 cycles in advance - Informative and interactive graph view - Statistics from your cycles and fertility - Integration with Apple Health app - Personalised messages ‘Plan a pregnancy’ mode: - Personal fertility scale to pinpoint the optimal days to conceive - Pregnancy detector - Information about your baby’s development, including videos SUBSCRIPTION 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 of 6.99 GBP or a yearly fee of 59.99 GBP. 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 at the price described above. 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. Our Privacy Policy and Terms of Use can be viewed here:



  • Love the app, one flaw

    By chaarhead
    I love the app. It’s working really well and the premise is genius. There is only one flaw for me, I never receive any notifications despite turning them on and allowing push notifications.
  • So far so good

    By Melo213
    I have been using it for 4 months now and it is very useful but I am still skeptical about using the app to prevent getting pregnant. I agree with some of the other comments about the design of the app with is quite crowded. About the thermometer, really annoying loud beep but more than anything, no light whatsoever so not convenient when sleeping with someone else. All the rest is great and Im so grateful this app to exist! Ya!
  • The future of women’s contraception

    By pencil_legs
    I have been using Natural Cycles for 6 months, I wanted to come off the pill and I thought the app would be a great way to get to know my body. I was sceptical at first, I’m not ready to have a baby so i was over cautious at first, I was using contraception on green days and abstaining on red days! However after just a few months of using it, myself and my boyfriend now completely trust what it says - taking my temperature has become part of my morning routine and i feel like I could never go back to not using this app! Thank you Natural Cycles 💜
  • Love this app!

    By Katy771
    I use this app to track my periods and as contraceptive alongside condoms. I find it fascinating to be able to see my menstrual cycle. The only thing I don’t really like is the use of the words “Not fertile” on green days. I don’t think psychologically that is a good thing for a woman over 30 to see/read in regards to herself.
  • I deleted the app

    By Schaffer g
    within 2days I deleted and unsubscribe to the app and it still charge me £26.99. Waste of money
  • Life changing

    By Isejael
    This has given me freedom and control over my own life. It’s liberating not to have to endure hormone abusing chemicals and painful procedures, messing with the very essence of what makes us female. It’s given me power and confidence to take my body back and look after it. The more I use it, the more confident I become in the system and myself. I’ve learned an awful lot about how my body works and how my mind and body affect each other. It makes me feel I’m caring for myself more and in tune to what my body needs. Thank you very much for producing this! My body is jumping with joyful freedom! My boyfriend is also very happy 😜
  • Very good idea, but tricky if you’re up in the night regularly with children

    By Misskiti
    Great app, i decided I don’t want to pump any more hormones into myself so will be sticking with this and condoms. My only criticism is that it’s hard to take a normal temperature if you are regularly up in the night feeding a baby so I’m being extra cautious as this is all new to me and I don’t currently want any more children.
  • A revolutionary alternative option!

    By Fconway92
    This is an amazing alternative for girls that don't want to be on the pill. It takes a while for the app to get used to knowing your body to measure your cycles, and perseverance on your part to remember to take your temperature each morning- but 100% worth it. I love knowing what's going on with my body, rather than taking a pill where I'm unsure of the impacts.
  • Amazing!

    By Viempar
    Great way to give your body a breather from hormones! I love having the freedom and now on my fourth cycle I have 50% green days which feels like loads! Only thing I would add is there should be a way to add temperatures when offline, even if they can’t be processed till internet is on. Also the speed of opening the app is pretty slow and it seems to have an issue with turning landscape on the temperature add page. Just bugs which I’m sure will be ironed out.
  • The way forward for contraception

    By Ro Polls
    Couldn't recommend it enough!