SigmaCalculator is an advanced scientific and expression calculator for Android. Features:Standard functions (exp, log, ln, sin, cos, tan, factorial, random, ...), Built-in constants, Integrated keypad (Numeric and Alphabetic), Angle unit in radian or degree, Calculation history, User-defined variables, Function graphing, Equation solving, Complex numbers, etc.SigmaCalculator is available in english and french, depending on your device settings. SigmaCalculator supports the most common and useful mathematical functions. It’s easy to use: to evaluate a mathematical expression, simply type it in the input box, using operators (+ - * / ^), parenthesis and mathematical functions and press Calculate or the EXE button.You can use SigmaCalculator keypad to enter numbers, operators, functions and define variables. You can set variables (with any non-reserved name); use fundamental constants; solve equations; plot functions; do calculation with complex numbers; Advanced algorithm programming; etc.