Emu48 for Android

979 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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979 reviews
Vin Jovanovic
December 31, 2021
This is a very good transfer of HP calculator to android, but the app has a problem. When you enter numbers into it, often a white rectangle flashes at the right bottom corner and messes up the input. You have to be careful and wait until the rectangle is gone, otherwise you have to start entering again.
16 people found this review helpful
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Regis Cosnier
December 31, 2021
You can uncheck the option "Allow to pinch to zoom" to prevent unwanted zoom...
Robert Pierce
September 13, 2022
Needless to say this is the best HP emulation app!! I encountered some problems however. When trying to reset the calculator by pressing F1 F6 and ON, it just goes into bootloop and won't work anymore . Also when you set and alarm, the calculator freezes when it's time and you have to delete the whole calculator and install a new one.
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Dave Boehm
September 21, 2022
Excellent with the right background. S10. Update. Still works 100%, even with a new phone S22 Ultra. Paid over $400 for this calculator (SX) in the late 80's at University. Still the best calculator out there.
5 people found this review helpful
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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.