The fastest and most intuitive RPN calculator on Google Play!
RPN (reverse Polish notation) is a clever way to input numbers for calculation, made popular by HP financial calculator. Entering using RPN eliminates the need for parentheses, memory, and other distractions used by standard calculators.
Simple RPN Calculator supports up to 7 levels of input, and has all of most-needed functions without any of the confusion and clutter of non-standard math operators.
Simple RPN calculator uses no special permission, shows no ads, and is completely free. It's also open-source -- feel free to download the code on Github at https://github.com/ajlisy/SimpleRPNCalc