Free42 app analytics for January 2
Free42
- Thomas Okken
- Google Play Store
- Free
- Tools
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.
Free42 Usage Rank
The usage rank is based on Similarweb's algorithm that calculates current installs and active users over a 28-day period.
All Categories in
United States--
Tools in
United States#2,767
Users Interests & Top Categories
Top categories and apps used by Free42 users
Top categories
Affinity
Top apps within the category
More apps
27%
17%
13%
9%
Top Competitors & Alternative Apps
Apps with a high probability of being used by the same users, from the same store.
Real Scientific Calculator
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Free42 VS. January 2, 2026