Free42

Free42


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.

Recent changes:
Eentering a number with an empty exponent (e.g. 1E or 1E-) would yield . Fixed.
When the screen orientation was set to "automatic", it would not honor any system-wide orientation lock. Fixed.
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Free
95
4.8
User ratings
788
Installs
50,000+
Concerns
0
File size
3302 kb
Screenshots
Screenshot of Free42 Screenshot of Free42

About Free42
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.

Recent changes:
Eentering a number with an empty exponent (e.g. 1E or 1E-) would yield . Fixed.
When the screen orientation was set to "automatic", it would not honor any system-wide orientation lock. Fixed.

User reviews of Free42
I have been a HP-42s user since 1991. I am very pleased with the Free42 emulator. I have used the versions for Palm OS, Windows, and now Android.
Apr 11, 2011
Android Market Comments
A Google User
Nov 13, 2014
Best calculator in the world I grew up with this calculator and still have it on my desk. This app is a great replica of the real deal.
A Google User
Nov 13, 2014
Just like my real one
A Google User
Nov 12, 2014
very usable, including any programs you have. just very, very much faster than the original!
A Google User
Nov 9, 2014
Matches my HP 42s BEAUTIFULLY. Provides what I want in a calculator - very faithful rendition of the excellent HP 42s. Cool (and nice attention to detail) that the calculator's low battery icon indicates the state of my phone's battery.
A Google User
Oct 31, 2014
Good times I've used my HP 42s almost daily for 25 years. Now I don't have to worry about it dying on me and forcing me to use something else.