# Ovulation Calendar Diary > Menstrual cycle tracker for fertility prediction and pregnancy planning. (iPhone/iPad app by JOEL RODRIGUEZ.) - Source: https://appshunter.io/ios/app/ovulation-calendar-diary/id285831736 (this page in markdown: same URL + `.md`) - Developer: [JOEL RODRIGUEZ](https://appshunter.io/developer/285831739) - Category: Health & Fitness - Price: $1.99 - Age rating: 4+ - Requires: iOS 9.1 · 2 MB - Languages: English - Released: 2019-02-12 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/ovulation-calendar-diary/id285831736/reviews.md ## What is Ovulation Calendar Diary? The Ovulation Calendar helps you determine your fertile days of the month, so you can either achieve or avoid pregnancy. The calendar is based on the date of your last period, the average Period Length and the Luteal Phase. With this information a chart is generated for each month, including details such as the next period date, the best days to conceive a boy or a girl, your ovulation day and when you should abstain to avoid a pregnancy. ## Key features - Fertile day prediction - Ovulation day tracking - Next period date estimation - Gender conception prediction - Pregnancy avoidance guidance ## Recent user reviews (10 of 20) All indexed reviews: https://appshunter.io/ios/app/ovulation-calendar-diary/id285831736/reviews.md ### 3/5 — User friendly *2014-06-16* I've used this app for about 3 years now. I like it because it is user friendly but there are a few things that could be done to improve it. The bbt chart should show by your cycle, not by months because usually it is split between 2 months so you don't get a good picture of all the temps together for the one cycle. The bbt chart should also show somehow where you got a positive opk test. Those would be 2 big improvements that would make it better. I'm considering switching apps just because I need my chart to be better for me to look at and my doctor to evaluate and it's kind of hard to do that when one cycle isn't all on one screen. But other than that it's great for anyone not really needing the bbt charts. ### 3/5 — Period length doesn't go beyond 34 days *2013-07-08* Cons: I have a 40 day cycle, but I can't imput that because this POS app doesn't allow a cycle beyond 34 days. Also, I hate that I can't customize how long a period was for different cycles. Some periods can be shorter than others and the app creators need to realize this. Pros: Simple and easy to use. I like that it's not overy cutesy or flowery. It will also predict your next periods and ovulations which is nice and will even tell you when the best time to have sex is if you want a boy or a girl which is fun if you're trying to concieve. ### 3/5 — Does not support varying cycle lengths *2013-02-25* While I got pregnant the second month I used this app in 2011, I'm now frustrated with the fact that if you have varying cycle lengths, it changes everything in your history to that new cycle length which does not at all give you an accurate history if you are trying to track. This needs to be fixed. ### 1/5 — Dangerous app - waste of money *2012-12-29* Guys I had this app for over a year and here are some of the biggest challenges I have and unless they change that it's A waste of money . 1- Does not back up your data . Meaning if you get a new phone all your data is gone 2-- Does not sincronize with the computer app . Wich is such a shame because I spend over $10 getting both and they don't sink so there is not reason to have this two platforms . 3- My period has never ever been in the date or length it was predict 4- Has not have any big updates in months 5- Cost to much for been so bad and not been able to provided a account that store your data 6- The developers could be making lots of money by creating a email data base while proving the people te option to have a profile 7- missing the option of summarize your periods to show the doctor 8- missing graphics Hope that helps! ### 1/5 — Downhill fast *2012-03-27* This app was great at first. Then I started having many problems with it. First, I tried to change my cycle from 35 days to 28 and the future predictions wouldn't reflect the change. I tried everything. I ended up getting pregnant (I don't blame the app for that) and haven't used it in a while. Now I'm trying to set my cycle back to 28 days and it keeps crashing! So over the app! ### 5/5 — BEST APP EVER!! *2012-01-01* So my husband and I have been trying to have a baby for about a year ( not hard but trying) I bought this app 2 months ago! I repeat 2 months ago and I just found out I'm pregnant on Christmas :) I'm 5 weeks 4 days today and due August 29th!!!!!!! Can't wait to see if the gender will match up! Once I find out I'll let everyone know :) ### 5/5 — Perfect App!! *2011-09-05* Definitely worth the money. I got pregnant my second month off the pill. I bought an ovulation kit the first month as well & adjusted the luteal phase to make the dark green day match the day that I got a "happy face" on my ovulation kit. The second month everything matched the ovulation app calendar, and bam! Pregnant! We are waiting to see if the gender predictor is right or not, but I'm only 8 weeks, so we have a bit of a wait. Two of my friends have downloaded this app on my recommendation. Buy it! ### 5/5 — I'm pregnant!! *2011-08-19* Right after going off birth control I purchased this app, I'm not pregnant and I haven't even been using the app for a month. I can't believe how accurate it is! ### 4/5 — Please help :) *2011-07-13* This is the 1st review I've written and it's only because I care :) I really like this app, but need it to be changed a bit to accommodate for my irregularity. My cycle lasts 38 days :( and it only goes to 34. I am hoping that this can fixed, cause I really want to get pregnant. On a positive note I looked at many other similar apps and selected this one because of its design and ease of use. I really like the app!! Please help :) ### 1/5 — Desperately needs a data export feature. *2010-02-06* This app is easy to use and has a great interface, but as detailed in many of the other reviews it has some serious limitations (cannot deal with irregular cycles, loosing data, slow to load). One I cannot understand is why can the data not be exported - the graph feature in the app is useless so i found my self having to keep temperatures on both the app and my laptop. Save your $5. ## Frequently asked questions about Ovulation Calendar Diary ### How does Ovulation Calendar Diary predict my fertile days? Ovulation Calendar Diary uses the date of your last period, your average period length, and your luteal phase to generate a personalized chart. This chart details your ovulation day, fertile windows, and optimal times for conceiving a boy or girl. ### What is the price of Ovulation Calendar Diary? Ovulation Calendar Diary is a paid app priced at $1.99. There are no in-app purchases or subscriptions required for its core functionality. ### What devices is Ovulation Calendar Diary available on? The provided data does not specify device compatibility beyond general mobile application availability. It is likely available on iOS and Android platforms. ### How often is Ovulation Calendar Diary updated? The latest version, 7.92, was released on February 12, 2019. This indicates the app has not received updates recently, which may be a concern for users seeking the latest features or bug fixes. ### What is the age rating for Ovulation Calendar Diary? Ovulation Calendar Diary has an age rating of 4+. This rating is generally for content suitability and does not reflect the app's intended user base for its specific health-related functions. ### Can Ovulation Calendar Diary help me avoid pregnancy? Yes, Ovulation Calendar Diary provides guidance on when to abstain from intercourse to avoid pregnancy, based on your predicted fertile days and ovulation cycle. ### Does Ovulation Calendar Diary offer gender selection? The app claims to identify the 'best days to conceive a boy or a girl.' However, it's important to note that gender conception is influenced by many factors, and the app's predictions are based on common theories. ## Version history (last 1 release) ### 7.92 — 2019-02-12 This app has been updated by Apple to display the Apple Watch app icon. - Minor fixes ## More apps by JOEL RODRIGUEZ - [Period, Fertility and Ovulation](https://appshunter.io/ios/app/period-fertility-and-ovulation/id293629120) - [Lease Miles Overage Calculator](https://appshunter.io/ios/app/lease-miles-overage-calculator/id299464787) - [Gambito](https://appshunter.io/ios/app/gambito/id6760430432) - [Gambito Puzzles](https://appshunter.io/ios/app/gambito-puzzles/id6761285569) All apps by JOEL RODRIGUEZ: https://appshunter.io/developer/285831739 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*