RPN Calculator

Algenis Volquez

About this app

A native Android calculator built around Reverse Polish Notation (RPN) — the postfix, stack-based notation used by classic HP calculators. Instead of 5 + 3 =, you enter 5 ENTER 3 +: operands are pushed onto a stack and operators consume the top of it, so there's never any operator precedence or parentheses to worry about.

The app supports the four basic operations (add, subtract, multiply, divide), keeps a persistent, date-grouped history of every calculation, and shows the live stack — not just the current value — so you can always see what you're about to operate on.

What’s new

Redesigned RPN Calculator from the ground up!

• Brand new dark UI with a clearer stack display — see your
full running stack, not just the current value
• Calculation history now grouped by date, with one-tap clear
• Faster, smoother app built on modern Android tech
• Refreshed app icon

Same reliable RPN math you're used to — add, subtract,
multiply, divide — now with a much nicer place to do it.