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Free42

Free42
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Free42

HP-42S Simulator: advanced scientific programmable RPN calculator.

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Free42 is developed and provided by Thomas Okken.

Thomas Okken
How to Download&Play Free42 on PC?
Last Updated: 2026-04-15
com.thomasokken.free42
  • Overview

  • FAQ

Run Free42 on PC with LDPlayer

Free42 is a Tools application developed by Thomas Okken, but with the best Android emulator-LDPlayer, you can download and play Free42 on your computer.

Running Free42 on your computer allows you to browse clearly on a large screen, and controlling the application with a mouse and keyboard is much faster than using touchscreen, all while never having to worry about device battery issues.

With multi-instance and synchronization features, you can even run multiple applications and accounts on your PC.

And file sharing makes sharing images, videos, and files incredibly easy.

Download Free42 and run it on your PC. Enjoy the large screen and high-definition quality on your PC!

Free42 is a re-implementation of the HP-42S calculator and the HP-82240 printer.
It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image.
Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2.
All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors' permission.
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Screenshots and Videos of Free42 PC

With LDPlayer, you can download and run Free42 on PC, simultaneously managing multiple apps and multiple accounts. Become a master of time management, balancing work and entertainment effortlessly.

How to Download and Run Free42 on PC

  • 1

    Download and install LDPlayer on your computer

  • 2

    Locate the Play Store in LDPlayer's system apps, launch it, and sign in to your Google account

  • 3

    Enter "Free42" into the search bar and search for it

  • 4

    Choose and install Free42 from the search results

  • 5

    Once the download and installation are complete, return to the LDPlayer home screen

  • 6

    Click on the game icon on the LDPlayer home screen to start enjoying the exciting game