Another workaround for the buggy vibrator in Android 16. This one is a new option, "use older haptic feedback logic," for phones like the Pixel 10 Pro, where the pre-3.3.8f haptic feedback logic worked, but the new logic introduced in 3.3.8f does not.

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.

Screenshots from version 3.3.12

This release comes in several variants (we currently have 3). Consult our handy FAQ to see which download is right for you.