What's New

This app has been updated by Apple to display the Apple Watch app icon.

(v1.0.6)
- Supported iOS 9.

App Description

This calculator can display two results (main and sub).
The sub value displayed at the top left can be used in the main calculation.
You can switch easily between main and sub.

Please forget about the old memory function.
This is an evolved form of the memory function.

The two values can be easily compared.
There is no more need to write them down.

Two special keys.
1. [A/B] key : Switch between main and sub
2. [A],[B] key : Use sub value

The calculation history can be displayed in the blank space, and it can also be copied to the clipboard (long press on the history field).
The button and background colors are also customizable.

Please use it for simple calculations in every day life.


[Twin Calculator]-----------------------

iPhone Screenshots

(click to enlarge)

Twin Calculator screenshot 1 Twin Calculator screenshot 2 Twin Calculator screenshot 3 Twin Calculator screenshot 4 Twin Calculator screenshot 5

App Changes

  • March 25, 2013 Initial release
  • April 18, 2013 New version 1.0.1
  • July 18, 2013 New version 1.0.2
  • December 01, 2013 New version 1.0.3
  • March 05, 2014 New version 1.0.4
  • October 06, 2014 New version 1.0.5
  • October 17, 2015 New version 1.0.6

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