It is a great tool for getting the feel of a real slap in the face without actually having to do it to someone. All you need to do is download the Slapp PRO application on your Android device and choose the sound you want to use. Then, just tap the screen and swipe the phone towards the other person's face. It is very easy to use, and you can even record your own sounds if you want to.

The application saves the settings, so you don't have to choose your favorites every time you launch the application.