Trusted by 3M+ women over 10 years. Awarded Best Birth Control app by Healthline and Bestapp.com. 100% hormone-free contraception. No prescription is needed. Scientifically proven to be 93% effective with typical use and 98% effective with perfect use. FDA cleared.
HIGHLIGHTS:
○ The NC° app uses your body temperature to track ovulation so you know exactly when you're fertile – and what days you can/cannot get pregnant.
○ The NC° app adapts to your unique cycle, even if it’s irregular.
○ No hormones, no side effects, no pills or procedures – birth control revolutionized.
○ Scientifically proven to be effective: 93% effective with typical use, and 98% effective with perfect use.
○ Sign up to NC° Annual subscription for a FREE thermometer, and start measuring today!
○ Offers advanced data protection – Natural Cycles will never sell your data.
○ Get daily fertility insights + personal ovulatory patterns to help with your natural family planning needs.
○ The NC° app features customizable mood trackers, great for getting to know your body better.
○ Measure your temperature by wearing an Oura Ring or Apple Watch Series 8 or newer (while you sleep), or with the NC° Thermometer (in the morning).
○ Get reimbursed for your NC° subscription – US users are now covered by insurance.
Natural Cycles is more than a period tracker. Most other fertility tracking apps assume your cycle is 28 days long, even though 87% of women have cycle lengths that don't fit into the 28 day pattern... We understand that birth control is not a one-size-fits-all. Your cycle is unique to you! Our algorithm uses personalized temperature data to confirm your ovulation, reducing the risk of you being assigned an incorrect fertile day. Unlike period trackers, the NC° app allows you to identify your fertility status daily, so you can prevent pregnancy or plan for it with greater precision.
From birth control to planning pregnancy and every cycle in between – Natural Cycles is there for you with each stage of your fertility journey. Still not sure? Download the app and test out our Demo Mode. The app supports syncing with Apple Health.
*E. Berglund Scherwitzl et al. “Perfect-use and typical-use Pearl Index of a contraceptive mobile app”, Contraception, Volume 96, Issue 6, 420 - 425.
PRICING PLANS:
○ Annual subscription (and FREE NC° Thermometer): $119.99/year
○ Monthly subscription: $14.99/month
○ We recommend a minimum of 2-3 cycles to get the most out of your Natural Cycles subscription.
○ Our subscription fee helps to protect you and your data. Many free apps work by selling their users’ data to third parties for advertising. Privacy is non-negotiable for us; we will never sell your data.
PRECAUTIONS:
○ Natural Cycles does not protect against sexually transmitted infections (STIs). Use a condom to protect against STIs.
○ No method of birth control is 100% effective. Even when using the birth control app perfectly, there is still a chance of getting pregnant.
○ Natural Cycles is for women over the age of 18.
○ Natural Cycles is available as a method of birth control in the US, Europe, Canada, Australia and Singapore. In countries outside the US, Europe, Canada, Australia and Singapore, Natural Cycles is intended to be used for fertility monitoring.
○ To use Natural Cycles, you need to understand English or one of the supported languages.
○ Before making any medical decisions, remember to consult with a doctor.
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In-Apps
Annual
HK$ 628.00
Monthly
HK$ 78.00
Yearly with 7 day trial
HK$ 628.00
Screenshots
Natural Cycles FAQ
Is Natural Cycles free?
Yes, Natural Cycles is free to download, however it contains in-app purchases or subscription offerings.
Is Natural Cycles legit?
🤔 The Natural Cycles app's quality is mixed. Some users are satisfied, while others report issues. Consider reading individual reviews for more context.
Thanks for the vote
How much does Natural Cycles cost?
Natural Cycles has several in-app purchases/subscriptions, the average in-app price is 444.67 HK$.
Great app to track cycles and be more aware of your own body and menstruation/ovulation cycles. Good messages to keep you motivated into keeping track of temperatures and check LH levels.
Would love if you could add more information such as: mood,PMS, acne, pain, etc.
So Great!
Natural cycles has been life changing for me! You get what you put into it but it’s easy enough to use and monitor your temp! It’s so much better for your body than birth control. I highly recommend!
Super reliable
I have been using Natural Cycles to prevent pregnancy for a year a half now. My husband and I love it. I have learned so much about my body through logging information. Getting to know my cycle and getting in tune with my hormones has been huge as well. It truly is reliable when used as recommended. I have recommended it to so many friends and countless women’s lives are getting simpler because of NC! 10/10 recommend.
Using to prevent pregnancy
I’m using Natural Cycles to prevent pregnancy for this time being. But I started using Natural Cycles after my doctor recommended it. I have had a long history of using birth control. And found that I was not having any sort of period or connection to my cycle. Natural Cycles has allowed me to daily and look into each symptom daily and to evaluate where I am hormone-wise. I can’t afford to go to a naturopath. But I feel like checking in with myself daily on my symptoms and what’s going on is important. I do wish that this app had some more research regarding thermometers taking time. It is quite inconvenient when the dog is throwing up in the middle of the night to get up and take care of the situation. But the app recommends that you take your temperature before standing up. So it doesn’t seem realistic for a lot of people. Especially if you’re getting up in the middle of the night to take care of your baby. I’d have to imagine that your temperature would be off all the time and the app would not help you.
Very Informative / Not great for irregular cycles
I’ve been using this app for almost 2 years, as a disclosure. (And am very type A about measuring/checking the app) - I also have irregular periods. More on that later!
I had been on *the pill* previously, and coming off of it, was still not ready to try for a baby but wanted to start prepping for trying so used the “prevent pregnancy” option for a more months. My cycle was not very regular, but thought it might take a few months anyway since I had just stopped taking the pill.
Loved: when I first started on the app, it sent so many positive messages “great job cycler!” “Your temp measuring is great!”, etc. I loved how personal it felt, and it sent messages like that every few days when I first started my subscription. Also loved and still love the visual design of the app. It’s fun to look at and learn more about your cycle from the app. I’ve learned so much from this app! It is very informative on the female body / how cycles work.
Don’t love: Almost 2 years in, those positive messages are basically gone, other than when my cycle ends and it has the “review of your cycle” or when it gives the reminders to do a breast exam, etc.
We switched to “plan pregnancy” about 4 months into using the app. (Manually checking temps every morning with their thermometer) .. my cycle is sooo irregular, so it has been very frustrating when the app says “possible ovulation day”, we do the deed, and then bumps it back again to the next day when your temp doesn’t rise, etc. When it does this for a solid 2 weeks (or more!!!) and you’re trying to hit the right day, let’s just say it is not quite so fun to be trying for a baby.
We hit a year of TTC with no luck and my cycles are still very irregular. (Let me say tho, even with having irregular cycles, we were hitting the ovulation days .. so should have gotten pregnant) At this point we are almost to a year and a half of TTC. I took a break from measuring after we hit a year because it was starting to just stress me out (and we all know that’s not the way to get pregnant - stress) I used the app only to log when I got my periods and that’s about it.
Decided to invest in an Apple Watch so I wouldn’t have to measure manually every day, so have been using the app with an Apple Watch for about a month now (love how less stressful it is!) and it’s nice to have my temperature being tracked again. My cycles are still very irregular. Starting to think about fertility options.
At this point in the game, (a faithful user of t
Game changer
With Natural Cycles and my Oura ring making temp checks automatic, I feel free from hormonal birth control for the first time in my life. Hard to overstate how incredible that feels (I’ve been on/birth control for like 17/18 years!) Have learned so much about my cycle and monthly patterns, too. So grateful this app exists!
Amazing
Natural cycles has changed my life. I am able to fully understand my cycle, health, and emotional fluctuations. I’ve never felt better and recommend natural cycles to every female uterus having friends I come into contact with!
Only use if you want to use a condom half of the month
What I didn’t realize about natural cycles is that even when taking temperature every morning with complete accuracy, it will still give you 12 or 13 red days every month. With only 5 days a month that it is possible to get pregnant I was surprised to be getting over 10 red days every month. The app is user friendly but I wish they were more straightforward with how cautious they are giving green days.
My One Frustration…
The app seems to create this negative connotation for those trying to conceive - Red days and “USE PROTECTION”. I wish there was an option to switch the language if one wasn’t trying to prevent pregnancy.
With that said, I am thankful for the insights this app provides in conjunction with my oura ring.
Did not work
I used this app with the oura ring and was even more careful than the app told me to be. I ended up getting pregnant after 8 months of use