RPN calculator

    RPN calculator icon

    RPN calculator

    by: 197 8.8

    8.8 Users



    RPN is a four function calculator designed to replace the standard Android calculator. It features large buttons designed for easy touchscreen use. It operates using Reverse Polish Notation, uses high accuracy decimal arithmetic internally, and has a fixed point scrollable display.

    The code is open source and available at

    Found a bug? E-mail

    Tags: calculator , rpn , rpn calculator , calculator rpn , rpn calculator pro , rpn calculator on nexus 7 , rpncalculator , rpn calculator widget , calculatrice rpn

    Users review

    from 197 reviews



    Users comments for RPN calculator

    Steven Hackbarth

    by Steven Hackbarth

    Oct 14, 2017  |  "Awesome"

    Clean fast and simple RPN.

    Pete Heine

    by Pete Heine

    Aug 30, 2017  |  "Awesome"

    I am so thankful this app exists. There are too few people left in the world who appreciate the elegance and efficiency of rpn! This app creates a possibility to keep it alive.

    A Google user

    by A Google user

    Aug 12, 2017  |  "Awesome"

    I love it, it's simple, almost perfect. Good job!

    John Blue

    by John Blue

    Jul 06, 2017  |  "Awesome"

    Nice, simple calculator for those of us who like RPN.

    Robert Jordan

    by Robert Jordan

    Jan 24, 2017  |  "Great"

    Have used RPN for 40 years. Have looked at many Android RPN calcs and settled on this one primarily because of the great stack/history view. Would give you five stars if it had a Roll button to scroll the stack. Would also like slightly larger/bolder font on the buttons. Not updated since 2013, really? Too bad.

    JP Johnson

    by JP Johnson

    Dec 22, 2016  |  "Awesome"

    I have loaded this on every phone I have ever had.