About this app

Series total 120,000 downloads
Two tax rate keys can be used in the same way as commercially available business calculators.
The summary table for each tax rate can be displayed with one [TAX SUM] key.
Nine calculators are built in and can be switched with one touch.
Each calculation status can be checked in the switching panel.
The basic calculation function emulates a Casio calculator.

Major features:
* Two tax rates can be set and mixed calculations can be performed.
* With the [Tax Summary] key, you can display a summary of each tax rate (excluding tax, tax amount, tax included).
* It works just like CASIO's actual business calculator, making it ideal for accounting, bookkeeping and learning.
* 9 built-in calculators. You can easily switch from the menu.
* A thumbnail including the calculation screen is displayed in the calculator switching panel.
* The calculation history remains and you can add and search notes. You can also copy it to the clipboard.
* Built-in multiple wallpapers. You can also use images on your smartphone.
* You can select the button shape and the font for the numeric display (screen).
* You can select from 8 to 14 digits.

Main calculation functions:
Number of digits: 10 / 8 / 12 / 14 Selectable
Memory: 1 Memory (Individual memory for each calculator)
Memory display:
Displays the memory / constant calculation memory status.
GT: Gland total function
TAX Calculation:
Consumption tax can be calculated and excluded. Two tax rates can be set freely, and the tax amount is also displayed.
Tax sum:
With [TAX SUM] key, you can display the total of tax calculation and total by tax rate.
Calculation status display:
You can check the arithmetic operation calculation and memory function usage status on the display.
Multi％:
You can calculate percentages, premiums, discounts, etc.
Arithmetic constant calculation:
Constant calculation can be performed by pressing the four arithmetic keys twice.
Approximate calculation:
When the calculation result exceeds the number of digits, a rough numerical value of only the upper digits is displayed.
Carry down (shift):
Useful for correcting typing errors. You can erase the lowest digit by one digit.
＋／－（Sign change）:
Used to switch positive number (+) to negative number (-) and vice versa.
Rounded off:
You can select fractional rounding. (Rounded down / rounded off)
Decimal point selector:
Digits after the decimal point can be specified when fractions are processed.（5/4/3/2/1/0/ADD2）
Key rollover (5 keys):
You can enter up to 5 keys even if you first press the key while the finger is released.
3-digit scale display:
Easy-to-read and easy-to-understand 3 digit scale.
Two zero key:
Two 0s can be entered at once, and large digits can be calculated quickly.

New features

1.0.0
Initial release.

App Permissions

Allows an application to write to external storage.
Allows applications to open network sockets.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows access to the vibrator.
Allows applications to access information about networks.
Allows an application to read from external storage.