48sx, a vintage RPN calculator15.2 - Google Play
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Publisher Description
48sx is an emulator of the HP48sx, a vintage RPN calculator.
48sx: The HP48 SX Emulator!
The HP48 SX is a vintage RPN calculator that many of us remember with fondness. I used this calculator 30 years ago and fell in love with it. Now, I can carry it in my pocket every day!
The HP48 SX emulator for Android is available on the Play Store and GitHub. The bundled ROM is free for non-commercial use. No nags, no ads, and completely FREE!
- Play Store: https://play.google.com/store/apps/details?id=org.czo.droid48sx
- Releases apk: https://github.com/czodroid/droid48sx/releases
- Sources code: https://github.com/czodroid/droid48sx
48sx is a modified version of droid48, specifically tailored for the HP48 SX. Credit goes to Arnaud Brochard (author of droid48 for Android) and Eddie C. Dost (author of x48 for UNIX), who created an emulator of the Saturn processor in 1990.
48sx CHANGELOG
===============
* 15 Aug 2024 (Version 14.1.28728418)
- Bug fixes and performance improvements
- Intended to work from Android 5 to 14 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- In recent versions of Android, you must grant the 'Photos and Videos' permission for 'Load object on stack' and 'Save/Restore checkpoint ZIP' to function properly. The file must be located in the Download folder and have a '.png' extension.
* 11 Feb 2024 (Version 13.1.28459983)
- Bug fixes and performance improvements
- Intended to work from Android 4.4 to 13 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- On Android 13 (API 33), you must grant the 'Photos and Videos' permission for 'Load object on stack' and 'Save/Restore checkpoint ZIP' to function properly. The file must be located in the Download folder and have a '.png' extension.
* 26 Aug 2023 (Version 2.42.28217746)
- Bug fixes and performance improvements
- Intended to work from Android 4.4 to 13 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- New name for checkpoint ZIP: Download/48sx_cp_$DATE.zip
- New SVG icon for Android above Oreo (Android 8, API >= 26)
* 10 Jul 2022 (Version 2.42.27624074)
- Bug fixes and performance improvements
- Intended to work from Android 4.4 to 12 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- Fixed the "Large LCD" option in the settings, and replaced it with "HP48 LCD" to get full pixels
- The HP48's LCD screen has now a maximum width on your device, but you can set "HP48 LCD" in the settings get full pixels
* 4 June 2022 (Version 2.42.27573940)
- Bug fixes and performance improvements
- Intended to work from Android 4.4 to 12 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- Haptic feedback enabled by default, but can be disabled on settings
- New menu: 'Save checkpoint ZIP As...' : save the current checkpoint in a zipped file (in Download/checkpoint_$DATE.zip). This zip file must contain the files ('hp48', 'rom', 'ram' and maybe 'port1' or 'port2')
- New menu: 'Restore checkpoint ZIP' : restore from a zipped checkpoint.zip (that you choose)
- Permissions on "Choose File" works on some Android 11 and 12, depending on the brand. This will be my next update...
- When the action bar is enabled, pressing an hp48 button disables it again
- Checkpoint is saved at the first startup and new functions to load a stuck HP48
- New shortcuts, one for full reset, and another to restore from a checkpoint when the emulator is stuck
About 48sx, a vintage RPN calculator
The company that develops 48sx, a vintage RPN calculator is czodroid. The latest version released by its developer is 15.2.
To install 48sx, a vintage RPN calculator on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2025-06-01 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the 48sx, a vintage RPN calculator as malware as malware if the download link to org.czo.droid48sx is broken.
How to install 48sx, a vintage RPN calculator on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the 48sx, a vintage RPN calculator is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by 48sx, a vintage RPN calculator will be shown. Click on Accept to continue the process.
- 48sx, a vintage RPN calculator will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version 15.2
posted on 2025-06-01
- Intended to work from Android 5 to 15 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- In recent versions of Android, you must grant the 'Photos and Videos' permission for 'Load object on stack' and 'Save/Restore checkpoint ZIP' to function properly. The file must be located in the Download folder and have a '.png' extension. I hope it will be OK for Google Play!
version v14.1
posted on 2024-08-15
- Bug fixes and performance improvements
- Intended to work from Android 5 to 14 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- In recent versions of Android, you must grant the 'Photos and Videos' permission for 'Load object on stack' and 'Save/Restore checkpoint ZIP' to function properly. The file must be located in the Download folder and have a '.png' extension.
version v13.1
posted on 2024-02-11
- Bug fixes and performance improvements
- Intended to work from Android 4.4 to 13 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- On Android 13 (API 33), you must allow "Photos and videos permission". The file must be located in the Download folder, and its extension must be ".png" for "Load object on stack" and "Restore checkpoint ZIP" to work.
version 2.42
posted on 2023-08-26
- Bug fixes and performance improvements
- Intended to work from Android 4.4 to 13 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
- New name for checkpoint ZIP: Download/48sx_cp_$DATE.zip
- New SVG icon for Android above Oreo (Android 8, API > = 26)
version 2.42
posted on 2022-07-10
- Bug fixes and performance improvements
- New shortcuts, one for full reset, and another to restore from a checkpoint when the emulator is stuck
- Save and restore a zipped checkpoint
- Set "HP48 LCD" in the settings get full pixels (maximum width by default)
version 1.42
posted on 2019-10-18
* Bug fixes and performance improvements
* Intended to work from Android 2.2 to 10 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
* New skin
* Portrait mode only
* New round icon
* New name : 48sx
version 1.42
posted on 2019-10-18
* Less bugs... It now works on Android 10.
* Intended to work from Android 2.2 to 10 on armeabi-v7a, arm64-v8a, x86 and x86_64 architectures
* Portrait mode only
* New round icon
* New name : 48sx
version 1.39
posted on 2016-01-31
* Intended to work from android 2.2 to 6.x on armeabi, armeabi-v7a,,arm64-v8a, mips, mips64, x86 and x86_64 architectures,* New amazing skin, should be more readable on big screens,* New action bar with icons and menu when touching HP48sx screen,* New icon,* Complete fullscreen for android 4.4, 5.x and 6.x,* Corrected port2 settings,* Haptic feedback disabled by default, but can be re-enabled
version 1.36
posted on 2012-11-07
Several fixes and updates
Disclaimer
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