Emu48 for Android

1.17K reviews
Content rating
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About this app

This project ports the Windows application Emu48 written in C to Android.
It uses the Android NDK. The former Emu48 source code (written by Christoph Giesselink) remains untouched because of a thin win32 emulation layer above Linux/NDK!
This win32 layer will allow to easily update from the original Emu48 source code.
It can open or save the exact same state files (state.e48/e49) than the original Windows application!

Some KML files with theirs faceplates are embedded in the application but it is still possible to open a KML file and its dependencies by selecting a folder.

The application does not request any permission (because it opens the files or the KML folders using the content:// scheme).

The application is distributed with the same license under GPL and you can find the source code here:


1. Click on the 3 dots button at the top left (or from the left side, slide your finger to open the menu).
2. Touch the "New..." menu item.
3. Select a default calculator (or "[Select a Custom KML script folder...]" where you have copied the KML scripts and ROM files (Android 11 cannot use the folder Download)).
4. And the calculator should now be opened.


- Disassembler
- Debugger


Android version by Régis COSNIER.
This program is based on Emu48 for Windows version, copyrighted by Christoph Gießelink & Sébastien Carlier.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Note: some included files are not covered by the GPL; these include ROM image files (copyrighted by HP), KML files and faceplate images (copyrighted by their authors).
The Eric's Real scripts ("real*.kml" and "real*.bmp") are embedded in this application with the kind permission of Eric Rechlin.
Updated on
Aug 19, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

1.1K reviews
A Google user
February 19, 2020
Some minor issues with the display unless I use the bog standard portrait mode HP-50g skin. That one works perfectly, almost better than the real thing. The other included 50g skins cause keypress lag and other strange issues that don't detract from this outstanding app. Great work! Running on an old Samsung tablet with Android 4.4.3. Wish list - an expanded display (as if the calculator had a larger display screen). Maybe that isn't possible.
22 people found this review helpful
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Ü 30
March 17, 2024
A really great app perfectly replicating the original! The only complaint I have is the touch: tapping the keyboard does not register the keys quickly enough so that plenty are dropped which is very annoying.
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Walter Shore
December 16, 2023
I have used the emu48 for a long time. I have a Samsung Galaxy s23 ultra. Recently, I noticed the equation solver does not work. I get an error message "ERROR: too few arguments." I don't use the equation solver that much anymore. I use the HP50 skins/mode. The example I am using is the loan TVM. Not the one where you fill in the field in full screen, the one where you use the soft keys to input values. The same error happens on Go49Gp. Seems odd. If anyone has thoughts, let me know.
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Regis Cosnier
December 16, 2023
Hp50g user manual: Please notice that if you are using the RPN mode these two keys must be pressed simultaneously to activate any of the graph functions.

What's new

- Updated source code from Eric Rechlin's Emu48 version 1.64+ that was merged from Christoph Gießelink's Emu48 version 1.65. This new version improve the serial communication.