Free42
Not in any tracked top chart right now.
Updated 25 Oct 2026 · rankings refresh through the day
DeveloperThomas Okken
CategoryUtilities
PriceFree
Released
Rating★ 4.9 (34)
Version3.4.1
Age rating4+
First seen by us
23 Oct 2026
23 Oct 2026Rating
4.9 ★
34 ratings
Measured
Free42 on the App Store
App details
App ID
337692629
Publisher
Thomas Okken
On the store since
Nov 2009
16 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
9 MB
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.9 ★
34 ratings
Measured
Ratings
34
Measured
About 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.
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.
Latest updates
3.4.1
PRTRACE fixes and improvements.
