This 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. Different skins are also available.
- Decimal version: entering a number with an empty exponent (e.g., 1E or 1E-) would yield Not a Number. Fixed.
- iPhone version: HTTP server: Fixed downloading individual programs from, and uploading zip files of programs to, the /memory directory. This got broken in release 1.4.77, while implementing local file download.
- Android version: when the screen
- OS X 10.6 or later