For this it has the following options:
1) Automatically turn on the light when entering App.
2) Exit this App and enter other Apps of your device having the light turned on.
(For example you can talk with someone on the phone and have the light turned on at the same time).
3) Turn off the light automatically after some time if the device is not used.
4) Fastly turn on/off the light by simply shaking your device no matter in which application you are located at the moment.
4.1) Allows you to do the same thing as in option (3) but also having the screen off.
This App is using advertising, therefore it requires some additional permissions.