The free version of the SlApp application is designed to make fun of someone you want to smack. In the paid version, you can record your own slaps and have them stored in the app. It is a great app to make fun of your friends.

The app can make several different sounds, such as a fist bump, a crash, a slap, a hit, etc. The sounds can be used in different situations, such as in a fist fight, a hit, a crash, etc.

In order to get the best results, you should have a good slap, so try all the sounds and decide which one you like best.