Natural Cycles, Birth Control

Natural Cycles, Birth Control

By NaturalCycles Nordic AB

  • Category: Health & Fitness
  • Release Date: 2013-12-17
  • Current Version: 2.9.4
  • Adult Rating: 12+
  • File Size: 34.59 MB
  • Developer: NaturalCycles Nordic AB
  • Compatibility: Requires Android / iOS 8.0 or later.
Score: 4.5
From 1,008 Ratings


Natural Cycles 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. A green day means you are not fertile. A red day means that you are likely to be fertile and you should use protection. Make 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 8 red days in one cycle. Natural Cycles does not protect against sexually transmitted diseases (STDs). Planning a pregnancy: Natural Cycles goes beyond birth control. 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 "Prevent". 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 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 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 9.99 USD or a yearly fee of 79.99 USD. 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: Natural Cycles is only certified for contraception in Europe. In the US, Natural Cycles is intended to be used for fertility monitoring.




  • This app is the best!!

    By ndidier
    In all honesty, I love that I know what is going on in my body! 🙌 I got on birth control (patch) 7 months before I got married. By month 4 I experienced my first panic attack. My emotions were off the charts and I just felt TRAPPED. I felt so guilty because I knew it wasn’t the best option. Plus, I wanted zero chances of affecting me getting pregnant when my husband and I are ready! It’s actually been kind of fun! I’ve been using this app for six months! It’s crazy how accurate. Most mornings I start getting PMS symptoms and I’ll wake up with the app reminding me of it! Same thing with starting my cycle!
  • Great

    By dsudancer
    Very easy to use. Very clear results. Lots of statistics to view and clear explanations.
  • Liberated

    By MissLola85
    I've seriously been waiting for something like this for the past 12 years. I was on the pill when I was younger and there was just too many side effects. Then 2 years ago I tried an IUD and that was painful and ended up having it removed a year later. I was searching for a reliable form of birth control with no hormones and felt like I was stuck with options that weren't right for me. When I found this app I realized this could be exactly what I was looking for. This has changed my life and has helped me become a lot more aware of my body and cycle. The pill liberated women and now we are liberated from the pill.
  • Great App Great Functionality Great Customer Service

    By Danniedb9
    Really happy with this app and the customer service of the Company. Highly recommend.
  • Heaven Sent (and I'm not even religious)

    By MahogiePogie
    I was tired of depending on artificial hormones for protection from an unplanned pregnancy. The Pill left me feeling depressed and suicidal. I spent 7 years wondering what was wrong with me, after anti-depressants and therapy were only temporary fixes. I started researching the relationship between depression and artificial hormones used in birth control, and realized that the very thing I depended on to maintain a higher quality of life (I.e. Not having an unplanned child when I am young and ill-prepared) was what was interfering with me enjoying my youth. I was terrified to go off birth control, but Natural Cycles has provided a reliable method of measuring my fertility. It is easy to use, no nonsense. It has no frills, no ridiculous color scheme. It isn't abhorrently feminine and it does not try to make bleeding out of my uterus *~glamorous~*. This app simply empowers someone with a uterus to measure their temperature, read the data and patterns in it, and plan accordingly to what they see. This app gives me the same security The Pill did, without undercutting my self-esteem, my self-worth, and my ability to enjoy my life. This app has honestly given me my life back. It has rescued me from a daily reality of despair, confusion, and frustration. To any person out there on artificial hormones grappling with depression, give this app a try. Will getting off birth control cure your depression? Of course not. But perhaps it will make overcoming it less of an uphill battle. ...and did I mention that my partner uses it too? He gets a notification when I am about to start my period, and this month, he was the one that checked if I had actually completed a breast exam. As a woman in a heterosexual relationship, it's refreshing to have an app that my partner can use to participate in better understand my body. It is wonderful to have an app that is so scientific, so straight-forward, that even those who don't have a uterus can navigate it. 5 stars. 10 stars. 100 freaking stars. THANK YOU.
  • Not actually free :(

    By SparklyBunny93
    The other reviews say this is a great app however you have to pay to use it with monthly subscriptions.
  • The best option for birth control

    By TheBestFamily
    I’ve been off and on, but mostly on, BC for 15 years and it has taken a significant toll in my health. My marriage was not the same, if you know what I mean. This app has saved it all. I’m off of hormones and I am myself now and both my husband and I can notice it. I will never go back on BC as we know it. There is a better, healthier, smarter way and this is IT.
  • Love it!

    By rc-writes
    Really helpful.
  • Super helpful!

    By Lace & Grace
    Only have been using for the past two months but I signed up for the yearly subscription to get the thermometer as well. It’s been very informative and helpful, best app I’ve used to track not only my period but every part of my cycle. It’s cool to see the app working by giving you more Green Days as you add more data. I love that you can easily switch from preventing pregnancy to planning pregnancy and it automatically adjusts for you! And it’s completely natural and takes out the guess work! I’m using this as my primary form of protection, and will use it in the next year or two for pregnancy when my husband and I are ready! So glad I don’t have to use birth control!
  • Great program

    By Robynnera
    I’ve been using this program for 6 months. Due to a health condition I couldn’t use hormonal birth control anymore and my doctor suggested I look into an app like this one. I keep my thermometer next to my glasses to ensure I measure each morning. Having the Ovulation test strips helps, and the app has a little store section that sells them.