Features 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.
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Secure & Private
Your data is protected with industry-leading security protocols.
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24/7 Support
Our dedicated support team is always ready to help you.
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Personalization
Customize the app to match your preferences and workflow.
Screenshots
See the Free42 in Action
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Download on Google Play
Available for Android 8.0 and above