Default buttons - home/multitask/camera/flash/sound mode(ring&vibrate)/all apps/lock screen
Additional buttons - it's a shortcut to apps of your choice. you can set it to most frequently used apps so that you can access it easily.

You can set the shortcuts up to 4 applications, and with additional purchase, infinity! (5 rows, each with 4 spaces for single app or a folder containing infinite apps).

No matter what's on your android device's screen, you can just click on the shortcut or open up an all apps page and jump to another applications!

No more uncomfortable process of "Home button" or "Back key x 1000" -> "All apps" -> "Find your desired application" -> "Run it"

Use your android device with much more comfort with Floating Control!