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Developer's Description

When shopping abroad, I always keep in the corner of my head how much it will cost if the destination pass is in Japanese yen, and judge "cheap? / High?" Mental arithmetic is making the brain full rotation.

It is a difficult task to calculate the conversion to Japanese yen at the same time under the delicate judgment of whether to buy or not to buy.

It is a convenient calculator in such a case.

Detailed usage


(written in Japanese)


Please refer to the.


Publish operation videos.

Startup settings

Set the conversion rate on the first launch after installation. The conversion rate setting can be changed later.

Basic operation: four arithmetic operations

Has the function of a general calculator.

How much will I get if I buy six 120 baht items? ..., you can get the calculation result by touching = after the formula. And it displays the converted amount.

(The price of 120 baht is 423 yen, and if you buy six, will it cost 2,535 yen?)

Set currency units and exchange rates

"Input currency unit", "Conversion currency unit" and "Exchange rate" can be set.

"Exchange rate" is entered manually. (Reason: To calculate at the rate at which the yen was actually converted into local currency)

Display function of past calculation history

As you go shopping, you may want to remember, "How much was it at the store you mentioned earlier?"

In such a case, you can remember by displaying the history.

Changes are also recorded in the history when the exchange rate is changed.

When you touch the = (equal) button without any calculation formula, a sub screen for entering items appears. You can keep a record of what the price is.

The history can be displayed by touching the [MODE] button on the calculation screen and touching "History Display".

By touching the [Send] button on the history display screen, you can send it to other applications as text information.

By touching the [Delete] button on the history display screen, all history information can be deleted.

When only " Other" is selected on the item selection screen, you can enter a new item.

"Current settings" display function at startup

When you start up, the current settings are displayed.

Full Specifications

What's new in version


Release August 27, 2020
Date Added August 27, 2020

Operating Systems

Operating Systems iOS
Additional Requirements Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


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