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