It is a simple calculatorapplication. It is a free smartphone calculator that is easy to use once installed, and comes with a function to memoize calculation results.

(1) Arithmetic
You can perform addition, subtraction, multiplication, division, and parenthetical operations.
You can enter up to 15 digits.
The calculation formula is displayed in the upper row, and the numerical value of the intermediate calculation result is displayed in the lower row.
When you click on equals, the resulting number will be displayed on the top row.

(2) Erase [AC and C]
[AC] Delete all calculation formulas and numbers displayed in the upper row.
[C] Delete calculation formulas and numbers displayed in the upper row one character at a time. Only when the number is an exponent, the entire exponent value is deleted instead of character by character.

(3) Memory [memory]
You can memorize up to three numbers.
Use the memory 1-3 boxes and the CM1-3 buttons at the top of the screen.
(Can be used by copying and pasting)

・Memorization of numerical values
① When you touch the calculated value, the color of the value turns red (copy).
②Next, touch (paste) the memory 1 box and the red number will appear.
It will be stored in memory 1.

・Use of numerical values
①Touch the number in the memory 1 box, the color of the number will turn red.
(copy).
②Next, touch (paste) the upper row where the calculation formula is displayed, and the red value will be added to the calculation formula.

・Delete memorized values
①Touch the CM1 button below the memory 1 box and a confirmation message will appear.
②Touch OK on the confirmation message and the value in memory 1 will be erased.
If you touch Cancel, it will not be deleted and you will return to the original screen.

・Rewriting memorized numbers
If you try to store more numbers when the numbers are stored in memory 1,
A confirmation message will appear. If you touch OK, the value in memory 1 will be rewritten. If you touch Cancel, it will not be deleted and you will return to the original screen.

Memory 2 and Memory 3 can also be stored, used, erased, and rewritten in the same way.

・Cancellation of selection (cancellation of red color)
If you touch the red numbers again, the selection will be canceled and the numbers will return to black.

The numerical values ​​at the bottom, where intermediate results of calculations are displayed, can also be stored in memory in the same way.