Tools
(2,707 ratings)

Can now switch between the calculator and print-out by swiping sideways. This feature is experimental and may not work on all phones.

Implemented n-key rollover.

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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This release may come in several variants. Consult our handy FAQ to see which download is right for you.

Variant
Arch
Version
DPI
122 APK
February 22, 2020
arm64-v8a + armeabi-v7a
Android 4.0+
nodpi
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