App Icon Picker - Beta is a free Android application developed by pierrox that allows users to pick icons from installed apps or the Android system. The app is designed to work as an ADW compatible icon picker, meaning it is not meant to be used alone but rather to select an icon to be used in another app, most likely a customizable launcher like Lightning Launcher.

To use the app, simply select the menu to customize the icon from your launcher, choose "App Icon Picker," and tap on the icon you want to select. If you long tap on an icon, you can get the graphics defined by the application.

While the app is still in beta, it works smoothly and provides a useful tool for those looking to customize their Android launcher. Overall, App Icon Picker - Beta is a handy addition to any Android user's toolkit.