Previous Versions
Free42
3.3.11
XAPK
APKs
January 16, 2026
5.68 MB
Variant
Arch
Version
DPI
Free42
3.3.10
APK
October 31, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 0393a5fbb23c2427cfc94ec738a8f3f7d3db4fc8
Size: 4.14 MB
What's New:
Fixed crash in menu logic.
Free42
3.3.9
APK
October 18, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: df4ffe9b8e7ff9eeeda46bf9e5ec934fe30820b0
Size: 4.14 MB
What's New:
When a new program was created by inserting END, the new program could end up being locked initially. Fixed.
Free42
3.3.8f
APK
October 14, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: fdd851c7c45ee3c5e31aa71273d5fc8cf5602fc3
Size: 4.14 MB
What's New:
Workaround for buggy vibrator in Android 16.
Free42
3.3.8e
APK
September 28, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 7bdd10f638e54811e355d3afc82fd4ea97179934
Size: 4.14 MB
What's New:
More Android 16 kB compatibility tweaks.
Free42
3.3.8c
APK
July 19, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 2ab1b875ce5c6741eea1e6506621314fdcd686de
Size: 4.14 MB
What's New:
Fixed "No Status" and "Full Screen" modes. These got broken in 3.3.8.
Free42
3.3.8c
XAPK
APKs
August 5, 2025
5.82 MB
Variant
Arch
Version
DPI
Free42
3.3.8a
APK
July 5, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 9f21885cb5999d1a37c555e72369b7aa64502d21
Size: 4.14 MB
What's New:
Fixed layout for Android 15 and later.
Free42
3.3.8a
XAPK
APKs
July 5, 2025
5.82 MB
Variant
Arch
Version
DPI
Free42
3.3.8
XAPK
APKs
July 3, 2025
5.65 MB
Variant
Arch
Version
DPI
Free42
3.3.7
APK
June 30, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 5a0be81da6c397adff8b3d531f434f0f9c961091
Size: 4.14 MB
What's New:
Fixed pasting of 10^X without line number.
Fixed crash with skins with missing annunciators.
Fixed crash with skins with missing annunciators.
Free42
3.3.7
XAPK
APKs
June 30, 2025
5.82 MB
Variant
Arch
Version
DPI
Free42
3.3.6a
XAPK
APKs
June 12, 2025
5.82 MB
Variant
Arch
Version
DPI
Free42
3.3.6
APK
June 7, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 3d6dd02a56c4d54c38c875472e7d138dfe35c3dc
Size: 4.14 MB
What's New:
Fixed potential crash on app restart.
Fixed memory leak on app restart.
Fixed memory leak on app restart.
Free42
3.3.6
XAPK
APKs
June 9, 2025
5.65 MB
Variant
Arch
Version
DPI
Free42
3.3.5f
APK
June 5, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: c6086d3587385be6ee76b3c02126e585348618a7
Size: 4.14 MB
What's New:
Fixed potential crash on app restart.
Free42
3.3.5d
APK
June 3, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 2c15c02e569c7abb2e9ee129bb0ffc6e21a872ef
Size: 4.14 MB
What's New:
Fix for unreliable state file saving.
Free42
3.3.5d
XAPK
APKs
June 3, 2025
5.67 MB
Variant
Arch
Version
DPI
Free42
3.3.5c
XAPK
APKs
June 2, 2025
5.67 MB
Variant
Arch
Version
DPI
Free42
3.3.5b
APK
May 30, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 474cfd65c334528454dc404a7d6e161ee5881a85
Size: 4.14 MB
What's New:
Fix for certain rare crashes.
Free42
3.3.5b
XAPK
APKs
May 31, 2025
5.67 MB
Variant
Arch
Version
DPI
Free42
3.3.5a
APK
May 30, 2025
4.14 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a
Screen DPI: 160-640dpi
SHA1: 3c737d420b7e5bb1e9745a855a50087e3b5a0cff
Size: 4.14 MB
What's New:
Fixed a couple of crashes.
Free42
3.3.5
XAPK
APKs
May 24, 2025
5.82 MB
Variant
Arch
Version
DPI
Free42
3.3.4
XAPK
APKs
May 6, 2025
5.82 MB
Variant
Arch
Version
DPI
Free42
3.3.3
XAPK
APKs
April 29, 2025
5.82 MB
Variant
Arch
Version
DPI
Free42
3.3.2
XAPK
APKs
April 28, 2025
5.81 MB
Variant
Arch
Version
DPI
Free42
3.2.8
XAPK
APKs
April 11, 2025
5.79 MB
Variant
Arch
Version
DPI
Free42
3.2.7
XAPK
APKs
March 17, 2025
4.2 MB
Variant
Arch
Version
DPI
Free42
3.2.6
APK
March 11, 2025
7.37 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a, armeabi-v7a
Screen DPI: 160-640dpi
SHA1: fb7bf532962ec4601b26990175e66a044a89906b
Size: 7.37 MB
What's New:
Made ^ on hardware keyboards type ↑ again. This had changed to ^ when I added that character to the Free42 character set in 3.2.3, but typing it isn't appropriate in an HP-42S emulation.
Free42
3.2.5
APK
March 4, 2025
7.37 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a, armeabi-v7a
Screen DPI: 160-640dpi
SHA1: dba640e851ce99ee355202acaa627da997eb2fd3
Size: 7.37 MB
What's New:
When looking up built-in functions, ^ and ↑ are now considered equal. This fixes problems with program typing and pasting, and with direct command mapping in certain skins, specifically HP-41G and the Mueck_F42* skins. (Note: this is a related but separate issue from the updates to the Mueck skins' *.raw support files three days ago.)
Free42
3.2.4
APK
March 4, 2025
7.37 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a, armeabi-v7a
Screen DPI: 160-640dpi
SHA1: 43430660a10aa9211526397f3b32238be1e2a0ee
Size: 7.37 MB
What's New:
More accurate integer powers of complex numbers. Specifically: special cases for pure real, pure integer, and numbers of the form a+ai and a-ai.
Fixed VIEW for long values.
Fixed VIEW for long values.
Free42
3.2.3
APK
February 17, 2025
7.37 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a, armeabi-v7a
Screen DPI: 160-640dpi
SHA1: 1273353641d2a7e8170e1e63057157611bc0800b
Size: 7.37 MB
What's New:
Added a few characters to the character set, in order to allow copying and pasting text between Free42 and Plus42 without losing information.
Free42
3.2.2
APK
February 16, 2025
7.37 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a, armeabi-v7a
Screen DPI: 160-640dpi
SHA1: c4c81bc6735e12226996091a1b1c19524a41f412
Size: 7.37 MB
What's New:
The CUSTOM menu didn't stick reliably, due to a bug introduced in 3.2. Fixed.
Free42
3.2.1
APK
February 7, 2025
7.37 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a, armeabi-v7a
Screen DPI: 160-640dpi
SHA1: 981a2b44b1060f936e7b5d91a923fe69e4e6f859
Size: 7.37 MB
What's New:
Fixed crash when trying to load invalid skins.
Added IDENT function. This returns the app's version number as an integer, in aabbccdd format, with 3.1.12b formatted as 3011202, for example.
XROMs are now decoded immediately when pasting.
Added IDENT function. This returns the app's version number as an integer, in aabbccdd format, with 3.1.12b formatted as 3011202, for example.
XROMs are now decoded immediately when pasting.
Free42
3.2b
APK
February 4, 2025
7.36 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a, armeabi-v7a
Screen DPI: 160-640dpi
SHA1: c2dde79e7e61caf603f056d3b7aa6499cee9867e
Size: 7.36 MB
What's New:
Program locking, to prevent accidental editing of programs. This is done using the LOCK and UNLOCK functions. See the Free42 web site for details.
Improved display contrast in the built-in skins.
Pop-up ALPHA keyboard, for easier text entry.
Improved display contrast in the built-in skins.
Pop-up ALPHA keyboard, for easier text entry.
Free42
3.1.12b
APK
January 5, 2025
7.35 MB
Requires Android: Android 4.4+
Architecture: arm64-v8a, armeabi-v7a
Screen DPI: 160-640dpi
SHA1: a8b0e3af6e88e6f4b4bc28561f731f57099bf762
Size: 7.35 MB
What's New:
Rolling back the beeper fix from the previous release. It was not performing as intended. Back to the drawing board.
Alternatives to Free42
Electronics Circuit Calculator
Complete circuit calculator: resistor color codes, SMD codes & engineering tools
8.8 369
Electronics Toolbox: Circuits
Electronics toolbox with circuit calculators, IC pinouts and SMD codes
8.4 580
Touch RPN Calculator
Free RPN calculator with industry-standard features
7.4 460
Resistor & SMD Code Calculator
App provides a very simple and efficient way to calculate Resistor Color Code
9.5 250
Series/Parallel Resistors
Find out combination of resistors in series/parallel making a desired resistance
8.7 41
GeoGebra CAS Calculator
Graph functions, investigate equations, and plot data with our free graphing app
9.1 83
GeoGebra Scientific Calculator
Free scientific calculator for fractions, trigonometry and statistics
9.5 62
PrimeCalc Equation Calculator
Solve equations, matrices, derivatives and integrals with symbolic math
9.5 68
Bending Sheet Metal Calculator
Application allows to calculate the total flat length and k-factor for bending
8.4 28
