PCalc RPN Calculator

PCalc RPN Calculator

iPhone App - Designed for the iPhone, compatible with the iPad
PCalc RPN Calculator has an optional RPN mode and a plethora of conversions built-in, a two-line display, undo and redo, and just about everything else one would expect from a scientific or engineering calculator. Its display is fully customizable and includes themes, various color options, landscape/portrait mode, and more. It's an expensive calculator but it has an exhaustive set of features.

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