You can do most operations by moving your thumb slightly.

1. By touching Hotspot (the gesture area that are always visible on the screen), you can call the functions corresponding to the gesture.
2. By registering items to Launcher, you will be able to start them at any time quickly.

Gestures that can be registered in Hotspot
-> Five direction swipe
-> Single-tap
-> Double-tap
-> Long-press

Function that can be registered in each gesture and Launcher.
-> Open Launcher
-> Application, Shortcut, Widget
-> Open/Close Notification, SettingsPanel
-> Home
-> Recent Apps
-> Hide Hotspot
-> Hardware key

Usage of permissions
* AccessibilityService API
- For dispatch Android system action (key events, open notification panel, etc.).
- No user data is collected.
* Storage
- To backup/restore settings to SDcard.
* Other Application UI
- To put hotspot on screen.
* Your applications information
- To show recent used apps in launcher.
* Phone calls
- To call directly when you use "call directry shortcut".

Credit
* Александр Макриди (Russian language support)