It is a simple and easy calculator. It is a simple calculator with no complex functions at all. Features: ✓ Addition, subtraction, multiplication, division, percent operation ✓ Recording and recalling calculation results ✓ The numbers, operators, parentheses, results Custom colors ✓ Use touch sound The average person rarely uses complex and complex calculators or scientific calculators in everyday life. Most are very easy to use for general calculations and most need a simple calculator. 👍