[App] CalcNote – Notepad Calculator

CalcNoteCalcNote is the the notepad calculator designed for the smart phone.

You can immediately obtain a calculation result while allowing recognition of a calculation process.
CalcNote calculates instantly as you type. No need to tap equals.
You can do multiple calculations over multiple lines, and even connect the lines together using line references. When one line changes, the other lines update.
If you make a mistake, you don’t need to start again, you can edit your expression like in a text editor.
Of course, you can write a memo for your problems.

How to use

Result will be shown realtime to right pane when you enter the expression to left pane.
Tap the result to show the result as hex, binary, tax included and tax excluded. Then you can copy the result to tap it.
Tap the line number to refer to the previous answer.
If expression has syntax error, the result won’t shown.
You can edit your expression like in a text editor. Also you can copy and paste the expression.
Your expression and result will be saved automatically.
Result will be exponential notation if result is over 10^9.
The button can have sub buttons. You can perform the assigned operation to sub buttons by swipe to the up or down.
Swipe right on the display to show the side menu.
Swipe left or right on the numeric keypad to reveal mathematical keypad.
You can customize the appearance of editor. (Background color, Text color, Show line number)
You can refer to the previous answer by specifying the line number with ‘$’.
Ex) When you want to calculate the consumption tax.
2000 * 4
1900 * 2
($1+$2)*1.08 # =(8000+3800)*1.08

Please refer to online manual for more details

Main Functions

Four arithmetic operations
Percentage calculation
Modulo operation
Supports hexadecimal, octal and binary.
Rounded, Truncated, Rounded-up
Square root, Cube root
Power, Factorial
Permutations, Combinations
Trigonometric function sin,asin,sinh, cos,acos,cosh, tan,atan,tanh
Logarithm, Natural logarithm, Natural exponential function
Customizable fonts
Customizable colors
Customizable display format (European style and Indian style)
Absolute value
Saving a expression
Exporting a expression

If you have any concerns, feedback, or questions email me at

If you want to remove ad, Please purchase CalcNote Pro.

Thank you.

CalcNote user reviews :

Awesome No comment just loved it

Love it. Thanks for creating it. I find it more useful and use it most of the times. Reason – it will let me compare two or more computations right there. Also its strength is in using $lineNo. …Since it has two columns, one for computing the other for result, it makes sense to have a 3rd column for brief note per line. Revised. History is another essential feature it offers. Built in unit conversion makes it marvelous app that I discovered in few days. Thank you for so useful app. Plz do consider a 3rd column.
  • burton999 January 14, 2017
  • Thank you for your positive review. You can include notes in your expression. Everything to the left of the colon will not be evaluated. eg. `Salary for 10/2016: 950 JPY * 120 hours` Also everything to the right of the semicolon will not be evaluated. eg. `950 JPY * 120 hours; Salary for 10/2016` Best regards,

Contact developer :


Download CalcNote from Play Store

Thanks to Noriyoshi for sharing CalcNote

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