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RPNcalc

Name: RPNcalc
Author: Alexei Pesic

Alexei Pesic

A simple, modern calculator that uses RPN (Reverse Polish Notation).

System & tools
FOSS
Free
No ads
No tracking

Android only

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What are these stores? F-Droid, GitHub

A simple, modern RPN calculator that uses RPN. Reverse Polish Notation is a system where the operators are entered _after_ the operands. For example, rather than 2 + 2, you would enter: 2 2 + The main benefit is a faster, more accurate interface.

Developer: Alexei Pesic
Source code: github.com/apesic/rpncalc
Added to AppCosmos: 10 October 2026
License: GPL-3.0-only