48sx is a vintage RPN calculator emulator that allows you to relive the experience of using the HP48 SX on your Android device. The app, released on the Play Store, is free to download and comes with a bundled ROM for non-commercial use. The emulator has undergone several updates, with the latest versionreleased on July 10, 2022, fixing the "Large LCD" option in settings and replacing it with "HP48 LCD" to get full pixels. The emulator is intended to work on armeabi-v7a, arm64-v8a, x86, and x86_64 architectures, with haptic feedback enabled by default but can be disabled in settings. The emulator also includes new menus for saving and restoring checkpoints, new shortcuts for full reset and restoring from a checkpoint when the emulator is stuck, and bug fixes and performance improvements. The app's changelog is extensive and includes updates dating back to its first release in NovemberWith 48sx, you can enjoy the vintage RPN calculator experience on your Android device.