The idea is to take the strengths of the HP48 calculator, and try to get the same capabilities but with a touch screen Android device instead. It is a little limited at the moment. Implemented features: arbitrary precision float Good support for units. RPN calculator. Basic scalar operations Programmability
It's free of charge to get the installation package of Soft84, also, you can check out users' reviews on Droid Informer. The app works fine on Android 2.1 and above. This download is totally secure. Galexand developed this application that lies within the Productivity category.
The most recent update of the tool was released on Dec 16, 2013 and Soft84 has been set up by over 5K users. Users rated the app 3.6 on Google Play.