PlainCalc is a buttonless, algebraic-entry, mathematical calculator with variables and functions. To use PlainCalc, type an expression or assignment and press Return or Enter. Unlike most calculators Ive seen, PlainCalc allows you to indicate multiplication by juxtaposition, e.g., you can write 2πr instead of 2*π*r. Built-in functions include trigonometric functions, logarithms, and square root.
