droid48sx icon


    by: 959 8.4

    8.4 Users



    droid48sx : The HP48 sx emulator!

    HP48sx is a vintage RPN calculator. I used this calc 20 years ago ;-) I love this calc....and now I can have it in my pocket every day!

    No nag, no Ad, completely FREE!

    Droid48sx is a modified version of droid48 but for HP48SX, credit goes to Arnaud Brochard (author of droid48) and of course Eddie C. Dost - author of x48 - (See

    Tested on galaxy s2, nexus4 5 and 7.

    Droid48sx CHANGELOG
    sources on

    - 30 Jan 2016
    * 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

    - 24 Aug 2015
    * Corrected port2 settings
    * Haptic feedback disabled by default, but can be re-enabled

    - 26 Jan 2014
    * Corrected "put program on stack" bug
    * Corrected FC bug on android 4.3
    * Corrected random freeze on android 4.4
    * Data files are now stored on /sdcard/Android/data/org.czo.droid48sx/files (please copy your old files from /sdcard/.droid48sx)
    * Menu is displayed when touching HP screen
    * New menu : Save checkpoint (saves a backup copy of hp48/ram/rom/port1/port2)
    * New menu : Restore checkpoint (restores the backup copy of hp48/ram/rom/port1/port2)
    * New menu : Full reset (deletes firmware/ram and deactivate ports, if calc is still hung, please

    - 7 Nov 2012
    * first release

    Tags: droid 48sx , droid48sx freeware , droid48sx , droid48 y droid48sx , mail2web

    Users review

    from 959 reviews



    Users comments

    Russell Diehl

    by Russell Diehl

    Jun 20, 2017  |  "Awesome"

    I have tried a few HP48 apps but this one has worked the best on every phone I have installed it on.

    Darius Revel

    by Darius Revel

    May 20, 2017  |  "Awesome"

    RPN is different, but once learned you'll never want to go back. This app is just what's needed at the right price.

    FreeLunch ForChildren

    by FreeLunch ForChildren

    May 12, 2017  |  "Awesome"

    Excellent . . .

    A Google user

    by A Google user

    Apr 22, 2017  |  "Awesome"

    An excellent free HP48SX emulator. The memory is expandable from settings which emulates 128k RAM cards. Furthermore the memory can be protected by the save checkpoint option. If the calculator crashes or otherwise locks up simply use restore checkpoint. Save and restore checkpoint ought to have been on the original! Excellent on multiuser devices. All app data is kept in the user's Android/data/ directory. No interference from another user. Many apps store part of their data in /data/data/ which is a device wide location. This one does not do that.

    Tracey Snow

    by Tracey Snow

    Mar 18, 2017  |  "OK"

    Disappointingly, this apps hangs more often than not on my Note 5.

    Jorge Cevallos

    by Jorge Cevallos

    Feb 02, 2017  |  "Awesome"

    Great app! The best choice if you're looking for an HP emulator or any RPN calculator