--- title: "Natural Cycles: Fertility App - Reviews, Revenue and Downloads in United States | Apple App Store" description: "Natural Cycles is a 100% non-hormonal birth control app cleared by FDA. Get an NC° Band with our annual subscription, or a compatible wearable to measure your basal temperature and track your biomarke" --- # Natural Cycles: Fertility App — United States > Ovulation Tracker・FDA-cleared ![Natural Cycles App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/ac/29/e4/ac29e417-08cd-6c33-5644-2c57f3842275/AppIcon-0-0-1x_U007epad-0-1-85-220.png/400x400bb.png) **Developer:** [NaturalCycles Nordic](https://apptail.io/developer/naturalcycles-nordic-nZwb) (Sweden) **Category:** Health Fitness **Rating:** 4.8/5 (30,195 ratings) **Price:** Free **Bundle ID:** com.naturalcycles.cordova **Store:** Apple App Store **Country:** United States **Version:** 5.9.1 (released 2026-09-29) **Original Release:** 2013-12-17 **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id765535549) **AppTail Page:** [https://apptail.io/app/natural-cycles-fertility-app-one/united-states](https://apptail.io/app/natural-cycles-fertility-app-one/united-states) ## Natural Cycles Description Natural Cycles is a 100% non-hormonal birth control app cleared by FDA. Get an NC° Band with our annual subscription, or a compatible wearable to measure your basal temperature and track your biomarkers. Trusted by 6M+ women, using Natural Cycles as an ovulation tracker is a great way to start your birth control or fertility journey. Trust in science to support you • Natural Cycles is 98% effective when used as intended, and 93% with typical use. • Typical use is in the same effectiveness category as the contraceptive pill, which is 93% effective. • Unlike period trackers, our algorithm uses personalized temperature trends data to detect ovulation. Naturally prevent pregnancy • NC° Birth Control is a non-hormonal contraception with no side effects. • Our algorithm updates your fertility and ovulation status daily based on your temperature, showing not-fertile days, or days to use protection. Organic pregnancy planning • NC° Plan Pregnancy measures your body temperature to track ovulation when trying to conceive. • Powered by biometrics, our algorithm pinpoints ovulation and peak fertility - you can try when it matters. • NC° partner view lets you choose to allow your partner to follow your pregnancy planning journey. Monitor your pregnancy • NC° Follow Pregnancy helps you monitor your baby’s developmental stages. • Get tailored guidance, tracking baby movements, morning sickness, and other symptoms. Get postpartum support • NC° Postpartum supports you after pregnancy with daily check-ins, tracking symptoms, post-partum bleeding and providing articles with expert guidance. • Use temperature to know when ovulation returns post-pregnancy. Track perimenopause symptoms • NC° Perimenopause measures your temperature to track hormonal changes and symptoms until post-menopause. Gain sleep insights • See how and why your sleep changes across your cycle with Sleep Insights. Choose your measuring device •Natural Cycles is an ovulation tracker that can be used with the NC° Band, basal thermometer, Oura Ring, WHOOP, compatible Garmin devices or Apple Watch Series 8 or newer. • Easily measure your temperature to track your fertility, using your choice of compatible wearable. • Sign up to NC° Annual subscription and receive a free NC° Band. More than a period tracker • The NC° app adapts to your unique cycle, tracking fertility and ovulation even with irregular periods. • Most period trackers assume you have a 28-day cycle, when most women don’t. We give you tailor-made guidance based on your menstrual cycle. Subscription service • Subscribe to our monthly or annual plan to unlock core features. • Subscriptions are FSA/HSA eligible for reimbursement. Every Natural Cycles subscription includes our advanced data protection program. Some free period tracking apps don’t have the same level of accountability. Your privacy is a priority. Natural Cycles is designed to keep your data safe. The NC° app is more than just a period tracker, use it as a birth control, or to plan pregnancy with our ovulation tracker and daily fertility updates. Join 6 Million+ women who trust Natural Cycles. Natural Cycles connects with Apple Health to read and write your health data, including medications, body temperature and cycle information. ___________ 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 pregnancy. • Natural Cycles is for women 18 and older. • Natural Cycles is authorized for use as birth control in the US, Canada, the UK, the EU/EEA, Australia, Singapore, Brazil, and South Korea. Outside these regions, the app is intended for fertility monitoring only. • To use Natural Cycles, you need to understand English or one of the supported languages. • Consult with a doctor before making any medical decisions. ## Natural Cycles Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b1/60/d3/b160d350-9567-2a19-f9c3-5989d0bc96e6/1_Intro_Screen_EN-US__U00282_U0029.png/1290x2796.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b5/4a/1c/b54a1ccc-ac91-de54-63ee-e6a5504537e7/2_Predict_your_period_EN-US__U00281_U0029.png/1290x2796.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/4e/87/dc/4e87dc28-c3d5-8a2d-9280-6ca6ffe7017b/3_Tailored_fertility_tracker_EN-US__U00281_U0029.png/1290x2796.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/39/39/77/393977e3-aeee-66df-77b0-487cb859992b/6.7_Trackers_13.png/1290x2796.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/22/ac/af/22acaf5d-cffa-21d8-c063-bee74771a865/12_Sleep_Tracker_EN-US.png/1290x2796.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ab/cf/49/abcf4905-c442-564c-7f5f-4a2213b76ee4/NC_S6_en-US.png/1290x2796.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/6e/e2/2e/6ee22eab-143d-094e-9cfe-bed781db51a4/6.7_US_What_U0027s_included_8__U00281_U0029.png/1290x2796.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/76/05/bb/7605bba3-59b2-64c6-3835-8fa5060043aa/6.7_Trusted_by_millions_10.png/1290x2796.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/4e/85/1c/4e851ca1-ba38-603b-bc28-188dfe927b80/10_Deepen_your_connection_EN-US__U00281_U0029.png/1290x2796.png) - [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/48/b7/a7/48b7a791-87f5-5111-60f4-5dbb0ff65813/9_NC_U00b0_Secure_EN-US__U00281_U0029.png/1290x2796.png) ## Natural Cycles Rating Breakdown in United States - 5 stars: 27,239 (90%) - 4 stars: 1,638 (5%) - 3 stars: 211 (1%) - 2 stars: 164 (1%) - 1 stars: 943 (3%) ## Natural Cycles Reviews in United States ### *---- "Beware this app is a scam" This app is a joke and a scam. First of all it doesn’t track anything accurately. It never predicted my cycles correctly. Also, I called my insurance to ask about coverage and they said no insurance covers use of an app for services. I stopped using the app and they renewed the subscription without sending any reminder communication and refuse to refund the charge even though I canceled my subscription before the charge processed. Beware!! -- Habficurbsicitneif, 2024-12-30 ### ***** "Amazing!" I’ve never felt more knowledgeable or in control of my body! Absolutely love this app and think every woman needs it immediately -- Kaylee Stockton, 2024-12-30 ### *---- "Ridiculous" Paid a ridiculous amount of money for this app’s subscription after getting an Oura ring and it is by far the worst period app I’ve ever used. Completely counterintuitive. Despite having 6 day periods consistently for over a year, the app still insists my periods will be 3 days long EVERY MONTH. I’m better off with a calendar from dollar tree and a ballpoint pen. Save your money. -- kchazz17, 2024-12-29 ### ***** "NC is my Cycle Bestie" Title says it all! I love everything about this app. Combing the Oura Ring with Natural Cycles for accurate cycle tracking & birth control is one of the best decisions I’ve made for my health. -- mcbasey, 2024-12-29 ### ***** "Amazing app" The app is one of the best tools a woman can use to predict her cycle and either get pregnant or avoid getting pregnant! I have it paired with my Oura ring so taking my temperature every morning is easier than ever, but this app was able to predict with incredible accuracy both of my pregnancies, the first unplanned and the second being planned using the help of this app. It’s a wonderful tool every woman should have to better understand the workings of her body and make better choices around her reproductive health. -- Synnsiren000-, 2024-12-29 ### ****- "Great app, needs to err more cautiously in postpartum mode" I love this app! I started using it a few months before getting married for birth control until we were ready to have a baby. After switching to “trying to conceive” I became pregnant very quickly. I love the new postpartum mode. However, it did give me the green light to have unprotected sex a few months postpartum and then a few days later said it made a mistake, so there was a small possibility I could be pregnant. Luckily, I’m not! But I’d much prefer for the app to stay on the cautious side right after having a baby. No Irish twins please 🙃 -- rachkfry, 2024-12-27 ### *---- "Unauthorized Charges" I signed up for this a year or so ago because it had compatibility with Oura. Today I was charged an annual membership without authorizing the charge. It was not shown anywhere and I was not communicated that the charge would take place. Customer service has been unhelpful and unaccomodating. This app has literally made no difference in my day to day life other than causing me turmoil trying to navigate how to get out, cancel and get my money back. Stay away, beware. Don’t waste your time with this one. -- keatun, 2024-12-27 ### *---- "not the best, but the most expensive app" app assumes 4 day period minimum, so if you have shorter period it will incorrectly predict ovulation time and not let you change it. Much better apps for the money with way more options for logging and information. Really disappointed I couldn’t try without paying and cannot get a refund -- emzlyyy, 2024-12-26 ### ***** "Best Birth Control Ever!" I love this app and this hormone free birth control option. It’s super accurate and has helped me be in tune with my body. I will never go back to any other birth control option! -- Lakin Skye, 2024-12-23 ### ***** "Wish I had this 10 years ago" This app plus Oura ring has made my periods and ovulation completely predictable. It also helps me know when I actually have an elevated temperature due to a virus or illness. And the app is really well done. Super empowering for women. Thank you!!!! -- MartaMartajdhdjdu, 2024-12-21 [View all Natural Cycles reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Natural Cycles In-App Purchases | Item | Price | |------|-------| | Monthly | $16.99 | | Annual | $119.99 | ## Natural Cycles Store Rankings | Chart | Country | Category | Rank | |-------|---------|----------|------| | Top Grossing | Dominican Republic | Health Fitness | #15 | | Top Grossing | Ecuador | Health Fitness | #22 | | Top Grossing | Czechia | Health Fitness | #22 | | Top Grossing | Canada | Health Fitness | #26 | | Top Grossing | New Zealand | Health Fitness | #30 | | Top Grossing | United States | Health Fitness | #33 | | Top Grossing | Finland | Health Fitness | #35 | | Top Grossing | Belgium | Health Fitness | #41 | | Top Grossing | Mexico | Health Fitness | #41 | | Top Grossing | Sweden | Health Fitness | #43 | | Top Grossing | Peru | Health Fitness | #48 | | Top Grossing | United Kingdom | Health Fitness | #55 | | Top Grossing | Germany | Health Fitness | #55 | | Top Grossing | Norway | Health Fitness | #59 | | Top Grossing | Australia | Health Fitness | #59 | | Top Grossing | United Arab Emirates | Health Fitness | #61 | | Top Grossing | Switzerland | Health Fitness | #62 | | Top Grossing | South Africa | Health Fitness | #65 | | Top Grossing | Israel | Health Fitness | #73 | | Top Grossing | Colombia | Health Fitness | #76 | | Top Grossing | Denmark | Health Fitness | #77 | | Top Grossing | Ireland | Health Fitness | #80 | | Top Free | Sweden | Health Fitness | #83 | | Top Grossing | Portugal | Health Fitness | #90 | | Top Grossing | Brazil | Health Fitness | #90 | | Top Free | United Arab Emirates | Health Fitness | #112 | | Top Free | Finland | Health Fitness | #121 | | Top Free | United States | Health Fitness | #126 | | Top Free | Canada | Health Fitness | #129 | | Top Free | United Kingdom | Health Fitness | #172 | | Top Free | Australia | Health Fitness | #173 | | Top Free | Norway | Health Fitness | #174 | | Top Free | Switzerland | Health Fitness | #178 | | Top Free | Germany | Health Fitness | #196 | | Top Free | Brazil | Health Fitness | #240 | | Top Free | Ecuador | Health Fitness | #243 | | Top Free | Netherlands | Health Fitness | #245 | | Top Free | Denmark | Health Fitness | #248 | ## Natural Cycles Discovered Keywords - basal body temperature tracker - health - period tracker - ovulation tracker - fertility - modurn - natural family planning - natural cycles app - trying to conceive - birth control ## Apps Similar to Natural Cycles - [Fertility Friend FF Tracker](https://apptail.io/app/fertility-friend-ff-tracker-Ysb/united-states) - [Oura](https://apptail.io/app/oura-nLh/united-states) - [MyFlo® Period Tracker Calendar](https://apptail.io/app/myflo-period-tracker-calendar-Agk/united-states) - [Alive by Whitney Simmons](https://apptail.io/app/alive-by-whitney-simmons-cCt/united-states) - [FORM: Strength, Pilates, Gym](https://apptail.io/app/form-strength-pilates-gym-ElI/united-states) - [28: Period Tracker & Health](https://apptail.io/app/28-period-tracker-health-InI/united-states) - [[solidcore]](https://apptail.io/app/solidcore-EtK/united-states) - [Ovia Cycle & Pregnancy Tracker](https://apptail.io/app/ovia-cycle-pregnancy-tracker-FZP/united-states) - [Lively - Period Tracker, Cycle](https://apptail.io/app/lively-period-tracker-cycle-lHMm/united-states) - [Pregmate Ovulation Tracker](https://apptail.io/app/pregmate-ovulation-tracker-AIcn/united-states) ## Natural Cycles Available In - [United States](https://apptail.io/app/natural-cycles-fertility-app-one/united-states) - [United Kingdom](https://apptail.io/app/natural-cycles-fertility-app-one/united-kingdom) - [Sweden](https://apptail.io/app/natural-cycles-fertility-app-one/sweden) - [Canada](https://apptail.io/app/natural-cycles-fertility-app-one/canada) - [Australia](https://apptail.io/app/natural-cycles-fertility-app-one/australia) - [Brazil](https://apptail.io/app/natural-cycles-fertility-app-one/brazil) - [Netherlands](https://apptail.io/app/natural-cycles-fertility-app-one/netherlands) - [Germany](https://apptail.io/app/natural-cycles-fertility-app-one/germany) - [Norway](https://apptail.io/app/natural-cycles-fertility-app-one/norway) - [Ireland](https://apptail.io/app/natural-cycles-fertility-app-one/ireland) - [Denmark](https://apptail.io/app/natural-cycles-fertility-app-one/denmark) - [Finland](https://apptail.io/app/natural-cycles-fertility-app-one/finland) - [Mexico](https://apptail.io/app/natural-cycles-fertility-app-one/mexico) - [Spain](https://apptail.io/app/natural-cycles-fertility-app-one/spain) - [France](https://apptail.io/app/natural-cycles-fertility-app-one/france) - [Belgium](https://apptail.io/app/natural-cycles-fertility-app-one/belgium) - [Switzerland](https://apptail.io/app/natural-cycles-fertility-app-one/switzerland) - [Portugal](https://apptail.io/app/natural-cycles-fertility-app-one/portugal) - [New Zealand](https://apptail.io/app/natural-cycles-fertility-app-one/new-zealand) - [Austria](https://apptail.io/app/natural-cycles-fertility-app-one/austria) - [Italy](https://apptail.io/app/natural-cycles-fertility-app-one/italy) - [Czechia](https://apptail.io/app/natural-cycles-fertility-app-one/czechia) - [South Africa](https://apptail.io/app/natural-cycles-fertility-app-one/south-africa) - [Iceland](https://apptail.io/app/natural-cycles-fertility-app-one/iceland) - [Hungary](https://apptail.io/app/natural-cycles-fertility-app-one/hungary) - [Colombia](https://apptail.io/app/natural-cycles-fertility-app-one/colombia) - [Poland](https://apptail.io/app/natural-cycles-fertility-app-one/poland) - [Israel](https://apptail.io/app/natural-cycles-fertility-app-one/israel) - [Chile](https://apptail.io/app/natural-cycles-fertility-app-one/chile) - [Estonia](https://apptail.io/app/natural-cycles-fertility-app-one/estonia) - [Slovenia](https://apptail.io/app/natural-cycles-fertility-app-one/slovenia) - [Slovakia](https://apptail.io/app/natural-cycles-fertility-app-one/slovakia) - [Romania](https://apptail.io/app/natural-cycles-fertility-app-one/romania) - [United Arab Emirates](https://apptail.io/app/natural-cycles-fertility-app-one/united-arab-emirates) - [Dominican Republic](https://apptail.io/app/natural-cycles-fertility-app-one/dominican-republic) - [Luxembourg](https://apptail.io/app/natural-cycles-fertility-app-one/luxembourg) - [Ecuador](https://apptail.io/app/natural-cycles-fertility-app-one/ecuador) - [Singapore](https://apptail.io/app/natural-cycles-fertility-app-one/singapore) - [Peru](https://apptail.io/app/natural-cycles-fertility-app-one/peru) - [Argentina](https://apptail.io/app/natural-cycles-fertility-app-one/argentina) - [Bulgaria](https://apptail.io/app/natural-cycles-fertility-app-one/bulgaria) - [Russia](https://apptail.io/app/natural-cycles-fertility-app-one/russia) - [Latvia](https://apptail.io/app/natural-cycles-fertility-app-one/latvia) - [Hong Kong SAR China](https://apptail.io/app/natural-cycles-fertility-app-one/hong-kong) - [Türkiye](https://apptail.io/app/natural-cycles-fertility-app-one/turkey) - [Ukraine](https://apptail.io/app/natural-cycles-fertility-app-one/ukraine) - [China](https://apptail.io/app/natural-cycles-fertility-app-one/china) - [Malta](https://apptail.io/app/natural-cycles-fertility-app-one/malta) - [Uruguay](https://apptail.io/app/natural-cycles-fertility-app-one/uruguay) - [Lithuania](https://apptail.io/app/natural-cycles-fertility-app-one/lithuania) - [India](https://apptail.io/app/natural-cycles-fertility-app-one/india) - [Croatia](https://apptail.io/app/natural-cycles-fertility-app-one/croatia) - [Philippines](https://apptail.io/app/natural-cycles-fertility-app-one/philippines) - [Greece](https://apptail.io/app/natural-cycles-fertility-app-one/greece) - [Saudi Arabia](https://apptail.io/app/natural-cycles-fertility-app-one/saudi-arabia) - [Panama](https://apptail.io/app/natural-cycles-fertility-app-one/panama) - [Taiwan](https://apptail.io/app/natural-cycles-fertility-app-one/taiwan) - [Thailand](https://apptail.io/app/natural-cycles-fertility-app-one/thailand) - [Japan](https://apptail.io/app/natural-cycles-fertility-app-one/japan) - [Malaysia](https://apptail.io/app/natural-cycles-fertility-app-one/malaysia) - [Paraguay](https://apptail.io/app/natural-cycles-fertility-app-one/paraguay) - [Egypt](https://apptail.io/app/natural-cycles-fertility-app-one/egypt) - [Cyprus](https://apptail.io/app/natural-cycles-fertility-app-one/cyprus) - [South Korea](https://apptail.io/app/natural-cycles-fertility-app-one/south-korea) - [Honduras](https://apptail.io/app/natural-cycles-fertility-app-one/honduras) - [Namibia](https://apptail.io/app/natural-cycles-fertility-app-one/namibia) - [Bolivia](https://apptail.io/app/natural-cycles-fertility-app-one/bolivia) - [Indonesia](https://apptail.io/app/natural-cycles-fertility-app-one/indonesia) - [El Salvador](https://apptail.io/app/natural-cycles-fertility-app-one/el-salvador) - [Angola](https://apptail.io/app/natural-cycles-fertility-app-one/angola) - [Kenya](https://apptail.io/app/natural-cycles-fertility-app-one/kenya) - [Bermuda](https://apptail.io/app/natural-cycles-fertility-app-one/bermuda) - [Mauritius](https://apptail.io/app/natural-cycles-fertility-app-one/mauritius) - [Senegal](https://apptail.io/app/natural-cycles-fertility-app-one/senegal) - [Nigeria](https://apptail.io/app/natural-cycles-fertility-app-one/nigeria) - [Jordan](https://apptail.io/app/natural-cycles-fertility-app-one/jordan) - [Cayman Islands](https://apptail.io/app/natural-cycles-fertility-app-one/cayman-islands) - [Kuwait](https://apptail.io/app/natural-cycles-fertility-app-one/kuwait) - [Pakistan](https://apptail.io/app/natural-cycles-fertility-app-one/pakistan) - [Kazakhstan](https://apptail.io/app/natural-cycles-fertility-app-one/kazakhstan) - [Lebanon](https://apptail.io/app/natural-cycles-fertility-app-one/lebanon) - [North Macedonia](https://apptail.io/app/natural-cycles-fertility-app-one/north-macedonia) - [Nicaragua](https://apptail.io/app/natural-cycles-fertility-app-one/nicaragua) - [Nepal](https://apptail.io/app/natural-cycles-fertility-app-one/nepal) - [Cambodia](https://apptail.io/app/natural-cycles-fertility-app-one/cambodia) - [Oman](https://apptail.io/app/natural-cycles-fertility-app-one/oman) - [Qatar](https://apptail.io/app/natural-cycles-fertility-app-one/qatar) - [Ghana](https://apptail.io/app/natural-cycles-fertility-app-one/ghana) - [Belize](https://apptail.io/app/natural-cycles-fertility-app-one/belize) - [Suriname](https://apptail.io/app/natural-cycles-fertility-app-one/suriname) - [Brunei](https://apptail.io/app/natural-cycles-fertility-app-one/brunei) - [Bahrain](https://apptail.io/app/natural-cycles-fertility-app-one/bahrain) - [Azerbaijan](https://apptail.io/app/natural-cycles-fertility-app-one/azerbaijan) - [Vietnam](https://apptail.io/app/natural-cycles-fertility-app-one/vietnam) - [Belarus](https://apptail.io/app/natural-cycles-fertility-app-one/belarus) - [Jamaica](https://apptail.io/app/natural-cycles-fertility-app-one/jamaica) - [Armenia](https://apptail.io/app/natural-cycles-fertility-app-one/armenia) - [Venezuela](https://apptail.io/app/natural-cycles-fertility-app-one/venezuela) - [Sri Lanka](https://apptail.io/app/natural-cycles-fertility-app-one/sri-lanka) - [British Virgin Islands](https://apptail.io/app/natural-cycles-fertility-app-one/british-virgin-islands) - [Tunisia](https://apptail.io/app/natural-cycles-fertility-app-one/tunisia) - [Macao SAR China](https://apptail.io/app/natural-cycles-fertility-app-one/macau) - [Madagascar](https://apptail.io/app/natural-cycles-fertility-app-one/madagascar) - [Barbados](https://apptail.io/app/natural-cycles-fertility-app-one/barbados) - [Uganda](https://apptail.io/app/natural-cycles-fertility-app-one/uganda) - [Guyana](https://apptail.io/app/natural-cycles-fertility-app-one/guyana) - [Uzbekistan](https://apptail.io/app/natural-cycles-fertility-app-one/uzbekistan) - [Botswana](https://apptail.io/app/natural-cycles-fertility-app-one/botswana) - [Mali](https://apptail.io/app/natural-cycles-fertility-app-one/mali) - [Grenada](https://apptail.io/app/natural-cycles-fertility-app-one/grenada) - [Algeria](https://apptail.io/app/natural-cycles-fertility-app-one/algeria) - [Guatemala](https://apptail.io/app/natural-cycles-fertility-app-one/guatemala) - [Yemen](https://apptail.io/app/natural-cycles-fertility-app-one/yemen) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*