Ovulation and Pregnancy Calendar (Fertility Calculator, Gender Predictor, Period Tracker)

The Ovulation and Pregnancy Calendar (Fertility Calculator, Gender Predictor, Period Tracker) is now available as a free download on Apple Store for iOS owners. The application is supporting different languages: English, Simplified Chinese, Traditional Chinese. It weighs in at only 1.4 MB to download. It is highly advisable to have the latest app version installed so that you don`t miss out on the fresh new features and improvements. The current app version 1.0 has been released on 2014-11-25.
Bottom Line: For more information about Ovulation and Pregnancy Calendar (Fertility Calculator, Gender Predictor, Period Tracker) check developer Yi Ding`s website : http://nighp.com/opcalendar

I use this app to keep track every month Love this app don t know what I would do without                     Great app Rnyanez5840

Getting upset because I use this app But they have yet to come up with a update with the IOS So I can t use the app Please UPDATE ASAP     Needs a update Lily'aaa

I used this app for 3 years and it was awesome Unfortunately even though it worked great before the new software update on the iPhone now the developer of the app needs to update it so it doesn t even open now with the new phone software Unless the app developer updates the software to be compatible with the iOS 11 it s useless Update it and I ll update my review to be a more positive one     Needs a software update Erin0069

can you update this to the new ios 11 or 11 2 because i can no longer use it because it needs to be updated     UDATE PLEASE FNGM ..

I really liked this app It needs updated to work with iOS 11     Needs updated Babygirl2711

Please update the application                 Update NaNaLokisz3

Can you update your app as I am unable to use it since the 11 0 Apple update Thanks Otherwise I love the app                     Update Tori 3380

Creator needs to update app I can no longer use it due to IOS updates This has been the most accurate app been using for years and very sad I can no longer use it     Does not work after IOS 11 tigga1432

Please update to work on the version of iPhone I love this app and it will not open                     Love this app Lisa aug2116

Dear developer of this app as we receive update notice from Apple this app will slow down our phone till the developer make support for iOS 11 So please as much as u can fix for us coz ur apps was good n also it s being long time need ur apps update If u discontinued ur apps We will decide to remove     About notification to be update Musterih

This app I just purchased 3 month ago then now I found out that it s only 32bit and now update to work with IOS 11 don t buy it         Doesn t support IOS 11 anymore Sars0ura88

Could you update the app for iOS 11                     Love he app Please update so I can continue using it BabyDoll567

I don t appreciate when I spend money on an application and the developer fails to make the app compatible with Apple updates The app has become no functional since iOS 11 has been installed on my device     Developer doesn t update Mrs. Sweitzer

As a person who paid the extra fee for the calendar and who was using this app to track fertility windows it is extremely annoying that this app has not been updated to work with IOS 11 The developer really needs to update this or refund me my money     Needs to update annoyed and TTC

Hello seems this app is not compatible with iOS 11 Please update                 Os compatibility Sadanand G

Will you be updating this app to iOS 11 We can not use it otherwise                 iOS 11 CK 83

App needs to be updated You can t use it anymore     Update Eelliijjaa

Been using for awhile and love it just waiting on update so I can keep tracking my cycle                 Needs update to work with iOS 11 Cat:-)

I really wanted boys and wit this app I swear I got the 2 baby boys I wanted 3 5 years a part I just focused on conceiving with my husband when the app said most likely to have boys when I was ovulating And BOOM                     Conceived gender BlkMagic420

Accurate Great application                     Accurate sweetgirl0964

It tells you when the next menstrual cycle will be and ovulation Based on the ovulation and fertility schedule it shows you when you are most fertile with a boy or girl Cons needs more features like a diary             It s great Mars137483919395

Thank you Op Calendar 3 My ovulation date was right on the date you provided Now I m pregnant with my bundle of joy Thank you guys                     Great App If Your Trying To Get Pregnant Sassy Biatch

Within the first month of downloading the calendar feature was taken away If you want to check your last period you have to scroll through each individual day Unfortunate because this app seemed refreshingly simple and attractive Will be Deleting     Annoyed Laur0819

Me gusta porque es sencilla y f cil de entender el nico problema es que no puedes ajustar los d as del periodo si un mes fueron tres siguen siendo 3 aunque realmente hayan sido m s porque la aplicaci n no te permite cambiarlo             Es buena pero le falta RocĂ­o pollito

This app is the most accurate than the others                     Accurate Wigglymarks

I downloaded this app because it seemed more simple than the competitor s apps and I thought I would like it a lot more I have a very irregular cycle so I learned quickly this app isn t very accurate in recording pretty much anything and a month after I started using it you guys took the calendar function away What good is the app if I have to scroll through every single day of the year to look at when my period started ended etc I NEED an app that simpler allows me to look at a freakin calendar overview like ALL the other apps JUST like this one do except their apps are actually useful I ll be writing down my data from the app transferring it to another FREE app that offers FREE access to a FREE calendar Thanks anyways but it seems like you as the developers have quite a bit of work to do in order to make this app something that I would even consider using again But probably not     Really Not Helpful At All Annoyed2134581618

Tracking my period was the most important part Having a guideline when I was ovulating was exactly what I needed help with App said I was 5 days late so I took 2 test last night Both positive Thank you                     I m pregnant Bootyyy treasure

                    Great Mother2one

App is accurate when it comes to tracking my period Hopefully it helps us in getting pregnant again                 Very accurate Woohoo12345678910

No big difference     Why unlock calendar Mariamccarthy

I like this app but I am sad I have to pay 2 99 for the full use of app now         Not a fan of the change MI Mom 09

It s a great way to explain that whole Mary Jesus birth                     5 by far Wit my Tays

I paid for this app twice and have the receipt but it still doesn t work for me     Rip off Deni-Rose

Very great and fun app                     Simple Freak' for sneaks

Started tracking for 2 months then got pregnant and conceived my baby girl I always wanted Highly recommend this app to all my friends trying to conceive                     Got my girl cappuccinojen

The free version would work well if your cycle is regular and predictable But then again you really wouldn t need an ovulation predictor if that is the case Don t waste your time with this one Perhaps the 2 99 upgrade could do the trick but I can t attest to its usefulness     Free Version is very basic JapaneseParsley

Very easy and helps keep you on track                 Great Staceloo

Husband and I wanted to try for our second baby And I got the app to track my ovulation for our honeymoon We re excited to say we came home with more then a tan                     It worked I m pregnant Dangelina

This has very few features as far as a fertility app goes You can t add previous periods for a more accurate prediction or add much information in general You have to pay for it to do anything worthwhile I want an app like ovia with gender prediction and that doesn t seem to exist     Disappointed again Rdlopez

I used this app for a lil over a month and voila I conceived using this app it s right on with it s predictions I recommend this to anyone couple that is trying                     Worked like a charm Princesssss22

I haven t even been using it for a month and I am locked out of the calendar feature and the only way to access it is to pay the 2 99 for the full app I wanted to give this app a good review but it s a waste of time because they tease you with being able to use it and it fails you Better off getting a different one         Great until purchase required Hollander77

Great app can rely on it                     Reliable and Best TobeMom

Great app can rely on it                     Reliable and Best TobeMom

I love this app I was able to know when I was ovulating I took my IUD on January 1st 2015 and I m using this App this month looks like a boy for me When I was ovulating I was moody and I caught myself I was a lot emotional some uncomfortable with my lower tummy and I was very sensitivity and defensive But I stopped myself a lot of times to understand why I was feeling that way Thank you Is part of my everyday Soon to be mommy                     Re Hormones BellaAlbergo

Love this app Used it last January and it accurately predicted when I was ovulating in February and I got pregnant on the first cycle Also I know gender is all up to chance but it predicted a boy and I had a boy I m starting to use it now for period tracking and to not get pregnant                     Works great IMandaLeigh

Es buena la aplicaci n muy pero muy gen rica y algo cara me parece deber a ser gratis 3 meses y ya             Bueno pero complejo aun Fyjgytrv

There are plenty of free fertility tracking apps to choose from and this one cannot compete with others Deleting app     Not the best design Me64168

Love this app It s so accurate and one of my must haves                     Mrs Stefsmart