iPhone Screenshots


Period Diary is a free menstruation cycle tracker, ovulation and PMS calendar and a general female health and fertility monitor!
Whether you need help planning your pregnancy or want to avoid missing taking the pill, we’ve got you covered! Join many satisfied women who have made their lives simpler by tracking your symptoms, planning your activities and taking control of your life!

- Track your period, ovulation, fertility, notes, symptoms, moods, weight and more
- Automatic prediction of your period, ovulation, fertility (excellent for activity planning)
- A display of all your symptoms and notes on the calendar
- Pregnancy Mode
- Passcode protection
- Discreet icon name “P.D.”
- 3 completely integrated application skins
- Social Forum (connect with women around the globe)
- Excellent user support
- Charts
- Over 30 symptoms
- Over 20 moods
- Sync with Calendar
- Period notifications
- Fertile notifications
- E-mailing your data (Export)
- Unlimited notes and more...

-Period Diary relies on two scientifically proven formulas to deliver you the most accurate predictions for your cycle!
-Free from any hidden in-app purchases or ads

Period Diary is easy to use, once you download it you will start to wonder how you were able to live without this amazing health app all this time! Its elegant interface and numerous features are the answer to all of your female health-related problems. If you feel lost and want to know more about your health, you can find out more about your symptoms. You can even connect with other women on the Social Forum and discuss your issues. And if you have any problems with the app, our excellent user support is always here to help!

What's New

Version 1.4.6

Face ID support and bugfixes

Thank you for using the app!

Ratings and Reviews

4.7 out of 5

877 Ratings

877 Ratings

Amazing App


I have been using this app since 2015 and I LOVE IT! I have kept up with it since and I knew immediately when I was pregnant because of how accurate this app is. It allows you to keep track of not only your periods but also when you ovulate and what days of the week you are fertile. I’m now 6 months postpartum and started using it again and it’s still accurate!

I love this application!


I like that this app lets you record your last cycle, many times I had to guess when my last cycle was, now I can log it in the application itself! Please keep adding new features to it, I enjoy using it!

Export Useless

Rai L

The data can only be emailed as a static PDF or exported to your phone calendar. Unfortunately the calendar export does no send over notes and handles periods clunky (doesn't designate a range or beginning/end day or include data on flow -- just states "period"). There needs to be a way to get data out in a spreadsheet format. I paid to be able to export and feel duped.

Developer Response

Hi! We are sorry to hear this feature was not to your liking. We appreciate your feedback, and will take it into consideration when developing future updates.


ONI DANI d.o.o.
107.2 MB
Health & Fitness
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Croatian, Dutch, French, German, Italian, Japanese, Portuguese, Spanish
Age Rating
Rated 9+ for the following:
Infrequent/Mild Mature/Suggestive Themes
© Those Days


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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