Take Control of Your Fertility and Contraception Needs with Natural Cycles:
○ The Top Rated Birth Control and Fertility Partner App in the US & UK
○ The only contraceptive app cleared by the FDA and CE marked as a medical device
○ Adaptive tracker technology that uses your unique cycle and basal temperature so you know exactly when you're fertile, and what days you can and cannot get pregnant
○ Daily insights into your fertility and personal ovulatory pattern to help with your birth control or natural family planning needs
○ Scientifically proven to be effective from day one: 93% effective with typical use, and 98% effective with perfect use

Natural Cycles places birth control into your own hands.
Natural Cycles is a scientifically-proven birth control option alongside the pill, IUD and the condom. 93% effective with typical use, and 98% effective with perfect use. The scientific study that determined Natural Cycles' effectiveness is one of the largest of its kind, with 15,000 women and 600,000 menstrual cycles. It was peer reviewed and published in the renowned journal Contraception.*

Natural Cycles is more than just a birth control app, the app Natural Cycles also helps users who are trying to conceive with natural family planning.. Natural Cycles can help you plan a pregnancy by tracking your basal body temperature to predict ovulation and tell you when you are most fertile. As you continue to enter your temperature, our algorithm will understand your cycle better and can predict ovulation to tell when you are most fertile.

Measure your body temperature with a basal thermometer and add your data.
Natural Cycles works by users taking their basal body temperature each morning and then adding your data into our app to help us analyze your menstrual calendar. Your temperature changes during your cycle are significant in predicting your fertile window. A basal thermometer is included with our annual subscription or can be bought as an add-on to our monthly subscription.

The app supports syncing with Apple Health.

Founded by particle physicist, Dr. Elina Berglund, with a goal to offer women an effective, hormone-free method of birth control, Natural Cycles identifies ovulation by analyzing basal body temperature, learning your unique cycle so you can get to know your body better, and know the exact days you can and can't get pregnant.

○ Yearly Plan (Recommended): $89.99/year.
○ Monthly Plan: $9.99/month.
○ A subscription is needed to use the app, and while a free demo is available, we recommend a minimum of 2-3 cycles for Natural Cycles to be most effective.

○ Natural Cycles does not protect against sexually transmitted infections (STIs). Use a condom to protect against STIs.
○ No method of birth control is 100% effective, even when using the birth control app perfectly you can still have an unintended pregnancy.
○ Natural Cycles is for women over the age of 18.
○ Natural Cycles is only available as a method of birth control in the US and in Europe.
○ To use Natural Cycles, you need to understand English or one of the supported languages.

Natural Cycles offers in-app purchases, with an Apple ID. The payment will be charged to the user's iTunes Account at confirmation of purchase. The subscription will be automatically renewed unless auto-renewal is canceled at least 24 hours prior to the end of the current subscription period. The account will be charged for this renewal within 24 hours prior to the end of the current subscription period at the monthly or yearly price described above. Subscriptions may be managed and auto-renewal turned off in the iTunes Account Settings. Cancellation of the current subscription is not possible during an active subscription period.

*E. Berglund Scherwitzl et al. “Perfect-use and typical-use Pearl Index of a contraceptive mobile app”, Contraception, Volume 96, Issue 6, 420 - 425.

What’s New

Version 4.4.1

This new update brings you small changes to make your Cycling experience even better!

Ratings and Reviews

4.8 out of 5
1.2K Ratings

1.2K Ratings

Editors' Notes

Understanding the complexities of ovulation cycles is hard enough. Thankfully, Natural Cycles aims to make the monitoring process a whole lot less stressful. By logging just a few vital signs, the app’s powerful algorithm can help predict crucial fertility windows, pregnancy or even potential miscarriages. We’re also impressed by Natural Cycles’ clear, intuitive design—no cold waiting rooms to be found here.

Kittell ,


I’ve been using the app for over three and half years now once I decided to take control of my health and stop using hormones to control my erratic cycle. I don’t even remember how I found out about it, but I loved the story behind how it came about and that it was backed by science. I initially struggled with the app results because I had a highly irregular cycle (from my teen years til into my mid thirties) which generally gave me minimal green days, which was frustrating. However, I changed my lifestyle (my diet) two years ago which lead to my cycle normalising, and now I regularly see 70% green days per cycle. I’ve considered going back to other simpler apps, but there is something comforting about natural cycles, which has only improved again and again over the years with the additions to the app.
Would love to see them create a widget in future that allows us to enter the temp without opening the entire app, and the option to change the background colour on the main info page. The ‘month’ tab can also be a little daunting to absorb as its a lot of colour coding in one go, would be nice to see a more traditional style calendar layout with smaller colours used.
But I do genuinely love the messages and reminders that turn up in the app, the cycle summary I get every month and just hire simple the entire process is. I highly recommend this to anyone who is ready to start listening to their body and take control of their health.

Katiebabychipsngravy ,

Contraception of the future!

I have tried every contraception, all different kinds of the pill as well as implanon, mirena, nuva ring... everything but the injection. Hormonal contraception turns me into a different person, it affects my moods so badly and I feel after being on the pill for so many years and changing so often that I had just decided I was a moody person when in reality it was probably what I was putting into my body. I’m loving the natural cycles app, I think every female should have this to help learn how their own body works! I’m never going back to hormonal contraceptives. I’ve been waiting for something like this forever. This is the contraceptive of the future BUT just like everything, I think you need to read up on how it works and whether or not it works for you and your lifestyle. I do think you need to be mature enough to be prepared if it fails, in a healthy long term relationship and need to be open and discuss how it works with your partner. Works great for me and I love it!!

App Privacy

The developer, NaturalCycles Nordic AB, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Purchases
  • Contact Info
  • Identifiers
  • Usage Data
  • Sensitive Info
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

You May Also Like