# Ovulation Calculator Fertile Tracker & Calendar OC > Fertility tracker and calendar for conception assistance. (iPhone/iPad app by Ovulation Calculator Pty Ltd.) - Source: https://appshunter.io/ios/app/ovulation-calculator-fertile-tracker-and-calendar-oc/id1010506484 (this page in markdown: same URL + `.md`) - Developer: [Ovulation Calculator Pty Ltd](https://appshunter.io/developer/1010506483) - Category: Medical, Health & Fitness - Price: Free - Rating: 4.60/5 from 5,867 App Store ratings · 264 written reviews indexed - Age rating: 12+ - Requires: iOS 8.0 · 30 MB - Languages: American English - Released: 2016-10-09 - Data updated: 2026-08-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ovulation-calculator-fertile-tracker-and-calendar-oc/id1010506484/reviews.md ## What is Ovulation Calculator Fertile Tracker & Calendar OC? Ovulation Calculator (OC) helps couples conceive up to 3x faster than the national average. When you're trying to get pregnant you need to know when you're most fertile and when to have sex! OC calculates your two most fertile days each cycle by analyzing your unique menstrual cycle, health and lifestyle data. Ovulation Calculator also provides a huge amount of fertility knowledge through our education portal. As well as access to an online-support network of thousands of other women trying to conceive. The Ovulation Calculator app is free to download and use. KEY FEATURES: - Cycle Data Analysis Driven Predictions - Ovulation Calculator - Ovulation Calendar - Cycle Overview At A Glance - Fertile Window and Conception Odds Viewer - Fertility & BBT Chart - Cycle Reports - Daily Insights - Fertility Knowledge - Fertility Tips, Alerts & Reminders - Easy Cycle Data Logging - Fast Period Logging SEE WHAT OTHERS ARE SAYING ABOUT OC: • "This was the most helpful App. It has all the information you need plus it helps work for your personal needs when trying for a baby." by Drhbzgjxs • "So in depth and helpful, you can do as much or as little as you want to track your cycles and it will help you predict them. I also love the forums, women are so helpful and supportive!! Thank you for making this website and app!!!!" by Dontlikehardlyworkingverymuch • "Ive downloaded alot of ovulation tracking apps and am very picky with how I like to see the calendar days if my cycle and the data Ive logged--this app does that well, AND it provides alot of side information for free that really does seem personalized for me based in the info Ive entered. I used this tool from their website but am so glad they made it into an app finally! Thanks!!" by Ovulateismygame Read more reviews here: https://www.reviews.io/company-reviews/store/ovulation-calculator TRACK YOUR UNIQUE CYCLE: - Daily progress log to record your daily signals such as BBT, cervical mucus, cervix position, OPK results, symptoms, mood and more. - Period log to easily add your periods and flow type in one place. - Fertility charting providing clues and insights into your cycle and fertility. - Calendar view and cycle view of your phases, fertile window and ovulation. CONNECT: Web: https://www.ovulationcalculator.com Facebook: https://www.facebook.com/ovulationcalculatordotcom Twitter: https://twitter.com/OvCalc Google+: https://plus.google.com/+Ovulationcalculatordotcom Ovulation Calculator - Because Accuracy Matters ## Key features - Cycle Data Analysis Predictions - Ovulation Calculator - Fertile Window Viewer - Fertility Charting - Daily Insights - Fertility Knowledge Portal - Online Support Network ## What do users think of Ovulation Calculator Fertile Tracker & Calendar OC? Overall sentiment: positive **Pros** - 🚀 Accurate predictions - 👍 Easy to use - 💡 Helpful information and tips - 🚀 Reliable tracking - 👍 Informative - 🚀 Worked first try - 👍 Comprehensive - 👍 Detailed - 🚀 Helped get pregnant - 👍 Great resource **Cons** - 🐛 Crashes/glitches - 🐛 Inaccurate predictions - 🐛 Issues logging data - 🐛 Difficult to edit information - 🐛 Compatibility issues **Commonly reported bugs** - Crashes when trying to use app - Inaccurate ovulation predictions - Unable to log period end date **Most requested features** - Option to add irregular periods - Ability to log period end date - Sharing/syncing with partner - Ability to add photos/test results ## Recent user reviews (10 of 264) All indexed reviews: https://appshunter.io/ios/app/ovulation-calculator-fertile-tracker-and-calendar-oc/id1010506484/reviews.md ### 5/5 — AMA *2026-05-17, version 1.5.1* This app is very very a curate ### 5/5 — I liked the application! *2026-04-26, version 1.5.1* I liked the application and his adaption regarding OPK. ### 4/5 — The questions make sense *2025-12-11, version 1.5.1* I like the concept ### 5/5 — Amazing *2025-10-10, version 1.5.1* I have been trying to conceive for the last three years after I had my son I’m going to be 40 next week and I thought I could no longer have any more kids because I was not getting pregnant. I decided to download this app and within the first month of using this appI found out I was pregnant literally 8 October and I just started using this app September 9 I logged in my last period. Truly I am still in shock. I have to take multiple pregnancy test and go to a clinic to find out if it was true or not and I am just ecstatic. I have a 20-year-old a 19-year-old a four-year-old and now my last baby, I wanted my son to have a sibling close to age to play with like my oldest two daughters. This app is truly a godsend. ### 5/5 — Brilliant *2025-09-02, version 1.5.1* Got pregnant 2 times with this app it’s amazing ### 2/5 — Tracker *2025-07-29, version 1.5.1* Really helpful and accurate ### 5/5 — 2 times a charm ! *2025-07-13, version 1.5.1* 2nd time I’ve gotten pregnant using this app!!! ### 5/5 — Most accurate app *2025-03-27, version 1.5.1* I’ve been using this app since wayyy before it was a app and was only a website lol I’ve been using this app since I was 13 years old and I’m 26 years old now . It always knows when my cycle is going to be off before I realize and has never been off about my ovulation dates . I’ve been able to get pregant due to the accuracy of this app . I have my oldest daughter who just started her cycle now using this app . I definitely recommend this app to anyone ### 5/5 — Highly recommended *2025-03-25, version 1.5.1* Over the moon. Great app, after reading reviews on this app I decided to give it a go as myself and new partner (now 7yrs together) decided to have a child together, after a previous loss 🥲 I still decided to use it to track periods and ovulation. Prior to taking pre-vitamins and logging daily and only using the app for a month WE R PREGNANT. (Nearly 3yrs ago) We’re shocked at how quick we conceived, again to finding out we expecting again I am over the moon. Highly recommend using this app ### 5/5 — Used this for 5 years! *2025-02-26, version 1.5.1* This app works really well. It helps you learn about female and male fertility and has accurate predictive calculations for both periods and ovulation. Highly recommend. ## Frequently asked questions about Ovulation Calculator Fertile Tracker & Calendar OC ### What does the Ovulation Calculator app do? The app helps users identify their most fertile days by analyzing their unique menstrual cycle, health, and lifestyle data. It aims to increase the chances of conception by providing accurate predictions and insights into fertility. ### What are the key features of this fertility tracker? Key features include cycle data analysis for predictions, an ovulation calculator, a fertile window viewer, fertility charting, daily insights, a fertility knowledge portal, and access to an online support network for users trying to conceive. ### Is the Ovulation Calculator app free to use? Yes, the Ovulation Calculator app is free to download and use. There are no costs associated with accessing its core features for tracking cycles and identifying fertile windows. ### How does the app help with conception? The app calculates your two most fertile days each cycle by analyzing your personal data. By knowing when you are most fertile, you can time intercourse more effectively, potentially increasing your chances of conception. ### What kind of data can I log in the app? You can log daily signals such as Basal Body Temperature (BBT), cervical mucus, cervix position, ovulation predictor kit (OPK) results, symptoms, and mood. You can also easily log your periods and flow type. ## Version history (last 5 releases) ### 1.5.1 — 2017-03-28 This app has been updated by Apple to display the Apple Watch app icon. Just some behind scenes improvements. Thank you for using OC! ### 1.5.0 — 2017-03-26 Thanks for all your feedback, testimonials and reviews. This version includes some improvements to the app and additional fertility information. ### 1.4.3 — 2017-03-23 - Fix broken link Thanks for using OC! ### 1.4.2 — 2017-03-13 Thanks for using OC! Just some behind the scenes improvements. ### 1.4.1 — 2017-03-02 Thanks for using OC! Just some behind the scenes improvements. ## Apps similar to Ovulation Calculator Fertile Tracker & Calendar OC | App | Rating | Price | Category | | --- | --- | --- | --- | | [Fertility & Period Tracker](https://appshunter.io/ios/app/fertility-and-period-tracker/id608066898) | 4.7 (1,700) | Free | Medical | | [Trying to conceive Tracker app](https://appshunter.io/ios/app/trying-to-conceive-tracker-app/id1468098256) | 4.5 (1,588) | Free | Medical | | [Menstrual Cycle Tracker](https://appshunter.io/ios/app/menstrual-cycle-tracker/id707430013) | 4.7 (2,565) | Free | Medical | ## Related topics [ovulation predictor](https://appshunter.io/ios/topics/ovulation-predictor) · [ovulation calculator](https://appshunter.io/ios/topics/ovulation-calculator) · [free ovulation calculator](https://appshunter.io/ios/topics/free-ovulation-calculator) · [fertility friend ff tracker](https://appshunter.io/ios/topics/fertility-friend-ff-tracker) · [ovulation calendar](https://appshunter.io/ios/topics/ovulation-calendar) · [ovutek](https://appshunter.io/ios/topics/ovutek) · [fully fertile](https://appshunter.io/ios/topics/fully-fertile) · [ovulation app chart](https://appshunter.io/ios/topics/ovulation-app-chart) · [ovulation app monitors](https://appshunter.io/ios/topics/ovulation-app-monitors) · [trying to get pregnant free](https://appshunter.io/ios/topics/trying-to-get-pregnant-free) · [free fertility tracking](https://appshunter.io/ios/topics/free-fertility-tracking) · [fertility and ovulation free](https://appshunter.io/ios/topics/fertility-and-ovulation-free) · [free fertility app](https://appshunter.io/ios/topics/free-fertility-app) · [ovulation tracker free](https://appshunter.io/ios/topics/ovulation-tracker-free) --- *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 2026-08-19.*