“I am supposed to have more one day!” Have you ever thought such a thing?
We often count the days with concerning for a schedule, but it may be often difficult because of holidays, irregular days off, individual plans, and so on.
This App makes such difficult calculation easy and accurate with iPhone, iPod and iPad that we carry always.
That’s why we designed new App “Calendar Calculator”.

How many holidays can we use for preparing our wedding party?
When will I get the wages for 10 days working?
When shall we start the duty of 10 days until the deadline?
How many days should I work until the Xmas?

- This App will answer such a question easily and quickly.
- This App will be very useful in various situations.
- Please try Calendar Calculator!

- This App is the free trial version of Calendar Calculator App. Max number of calendar in this free trial version is 3, and the advertising will appear after each calculation. When advertisings are unavailable, calculations in this App also become unavailable. There are no limitations in the normal version.

#Main features
This App can calculate in three ways mentioned below.
- To get the number of either working or non-working days with inputting the dates of start and end.
- To get the date of end with inputting the date of start and the number of either working or non-working days.
- To get the date of start with inputting the date of end and the number of either working or non-working days.

For the calculation, Calculator needs the calendar in which working and non-working days are scheduled.
At the first time installing, this App has sample calendars. They will help you to know how to use this App.

#Strong Point
- However there are a table calculation software to be able to count business days (Monday to Friday), there are no calculation software or App to be able to calculate with individual scheduled calendar (at September 10, 2014, according to our own research).
- You can create calendars for calculation very easily, and there are no limits for calendars.
- You can import events as either working or non-working days from iOS calendars.
- You can easily change the states of working or non-working days with tapping each days on the calendar.
- You can customize the color setting, and can make a note on each days.
- You can organize this App with URL scheme (jp.37.CalendarCalculator://) in other Apps such as launchers.
- This App (from ver.1.2.0) is just designed for iPhone and iPad with iOS8.

# Disclaimer
- Please check carefully End User License Agreement (EULA) before using the App.
- Additionally, you may not use this App unless you agree to terms included below.
- You agree to assume full and sole responsibility for any use of this App.
We are not responsible for any damages or injury, including but not limited to special or consequential damages, that result from your use of (or inability to use) this App, including any damages or injury caused by any failure of performance, error, omission, interruption, defect, delay in operation, computer virus, or other computer malfunction.

What’s New

Version 1.5.4

- The issue with third-party custom keyboard fixed.

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

RickyMiki ,


Free version is designed for 2037 calendar. Sampe calculations come with pop up “loading advertisement” never actually shows you the result. Complete waste of time. I wasted mine so you shouldn’t


Hiroyuki KATOH
20.4 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating


  • Family Sharing

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

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