Natural Cycles, Birth Control

Natural Cycles, Birth Control

By NaturalCycles Nordic AB

Score: 4.5
From 1,518 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.



  • Natural Cycles has brought me back to who I really am!

    By Amanda Gorman
    I’m so grateful for Natural Cycles. I’m only in the beginning few months with NC but I can already notice a difference in how I feel. I’m more connected to my body and I’ve learned more about my cycle than in my life. Thank you for your great work in this world - helping women reconnect with themselves and their femininity ❤️
  • Great community

    By Kat 312
    Not only is the app great but the community you can join on FaceBook is great. You have a lot of support from others and they answer so many questions. Learned so much about my body and fertility.
  • We followed this app to NOT get pregnant... and now we are

    By Kpeck034
    Well, we’re thrilled to be expecting, but it’s not what we had planned. My husband and I used this app to prevent pregnancy so I could finish grad school, but it didn’t work. I know everyone will assume that we just didn’t follow the app correctly, but we took absolutely no risks and did exactly what it told us to, and here we are!
  • DO IT. you won’t regret it

    By heAther712
    I was on hormonal birth control for 14 years and it literally made me a crazy person. Natural Cycles has allowed me to take control of my fertility while also still preventing pregnancy efficiently.
  • Empowered Woman

    By Zonogues
    Love this app. Love to know my body so well and love to feel so in control of my body through a natural approach. 🙏🏼🙏🏼🙏🏼
  • I’ll never go back to other forms of birth control

    By RShepp
    I’ve used the patch, the mini pill, the ring and had the Mirena IUD in for four years which made my PMS horrendous. I never felt good using any of those forms of birth control, and I wasn’t learning anything about my body or my cycle by using them. The natural cycles app is extremely easy to use; it’s got layer after layer of information backed by scientific data that you can access at any time. Measuring is simple and fast and I am just so excited that this app is out here!!
  • Good for reference, not something to follow unless you know your usual ovulation date.

    By adventures creature
    I was using this app and Ovia. This, you have to pay for, Ovia is free. This app adjusts more when you enter your data daily, BUT it was off by about 12 days on the cycle I have conceived (we were planning a baby with my husband, I was entering data for about 10 months before conception) Ovia was off by about 3 days. The formula here may work for most people but when using it as contraceptive, please remember that your body might be more complex than this algorithm.
  • Amazing !

    By natalieh28
    I recently had an incredibly painful ruptured ovarian cyst for the first time and after doctors told me it was “common”. I did some research and found that they can be caused by hormone imbalances. Just because things are common doesn’t mean they should be happening!! I had the hormonal IUD for about 4 years and was on the pill for about 3 years prior to that, so I always had extra hormones being pumped into my body. My sister found this app and I immediately had my IUD removed. I’ve been using Natural Cycles for about 4 months now and I love it! It’s so easy to take your temperature every morning and the app is so user friendly. It’s also nice getting in-tune with your body and knowing how you feel before a period or when ovulating. I recommend it to all my friends that are still on hormonal BC because I know having extra estrogen and progesterone introduced into the body most definitely disrupts the natural balance that your body keeps. This app makes it easy to be hormone-free.
  • Highly recommend!

    By jennabobenna0915
    I have never reviewed an app before, but I LOVE Natural Cycles! I was on hormonal birth control but I just couldn’t handle what it was doing to my body and emotions. Natural Cycles saved me and I just feel so grateful to live in a time that this option is available. As a plus, it has taught me so much about my body!
  • Great

    By REBECCA8493
    Love that I don't have to put another pill into my body... but be ready to have to use protection (a lot) the first few months as the app gets to know your cycle!