RPN Calc!

A simple reverse polish notation calculator loosely based on my trusty HP-32SII that runs on iPhone, iPad, and Apple Watch If you are familiar with HP RPN calculators, the operation of this calculator should seem very straightforward - albeit simplified. It cant be programmed, and it doesnt handle binary, or hexadecimal numbers. RPN Calc brings a reverse polish notation watch calculator to the Apple Watch In addition to the standard RPN Calculator app that runs on iPhone, iPad, and Apple Watch, RPN Calc includes a handy micro RPN Calc Today Extension available for convenient access to quick calculations from the pull down Today screen.