This is the arm64-v8a build of Free42 3.3.8f — the modern 64-bit ARM build that runs on virtually every Android phone released since 2017. It's smaller and faster than the universal variant because Android only loads the native code your CPU actually needs. If your phone is from the last 8 years, this is the right pick.
File size: 4.1 MB • Min Android: 19 • Target Android: 35 • Version code: 207 • Framework: Native (Java/Kotlin) • Permissions: 4
File Information
| Package Name | com.thomasokken.free42 |
|---|---|
| Version Name | 3.3.8f |
| Version Code | 207 |
| Architecture | arm64-v8a |
| Min Android Version | Android 19 (API 35) |
| Main Activity | com.thomasokken.free42.Free42Activity |
| Framework | Native (Java/Kotlin) |
| File Size | 4.14 MB |
| Signature (SHA1) | 47A7FBFF9AC06C8A9AB13D0D9541A41CDADAED0D |
| File Hash (SHA256) | add1f1ec276e3d6470899447a4f57789d6697647aecf320f07f8358ff174219e |
What's New
Workaround for buggy vibrator in Android 16.
App Description
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.
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.
Download Free42 APK
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APK Permissions 4
- android.permission.ACCESS_COARSE_LOCATION
- android.permission.ACCESS_FINE_LOCATION
- android.permission.INTERNET
- android.permission.VIBRATE
APK Verified
The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way.
Frequently Asked Questions about Free42 APK
This variant is built for 64-bit ARM (most Android phones made since 2017). If your device's CPU matches, this is the smallest, fastest version to install.
Yes — the APK's signature has been cryptographically verified against the publisher's signing key. The SHA-256 hash is shown in the File Information panel so you can independently confirm the file matches the original release.
Android 19 (API level 35) or newer. Older devices will refuse the install.
Install a free app like 'CPU-Z' or 'Droid Hardware Info' from the Play Store and look at the ABI / Instruction Set row. Most phones made after 2017 are arm64-v8a; if in doubt, download the universal variant.
All variants are functionally identical — same features, same version. They differ only in which CPU architectures the native code is compiled for, and (sometimes) which screen densities the included graphics target. Pick the one that matches your device for the smallest install size, or pick 'Universal' if you're unsure.