Reverse Polish Notation Calculator

Simple fixed-point decimal arithmetic, Reverse Polish Notation calculator. RPN calculators may be in the minority but they are easy to learn and very efficient. The idea is that the operator follows the operands, so that instead of typing 2 + 2 =, one types 2 enter 2 enter +. The left arrow either deletes the last digit or drops the last item from the stack. The up arrow show a few other functions such as setting the number of decimal points, swapping items on the stack and the use of exponents.


Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 1.8.1 (10) - Added on 2012-02-11

    This version requires Android ? or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    • control vibration
      Allows the app to control the vibrator.

    Download APK 33 KiB PGP Signature