If you had a trial version, turn the service off and back on upon install.
Tired of your keyboard backlight going out? Now it can be on as long as your keyboard is opened!
Set active time range (eg 8pm-6am) saves battery. Option to start at boot so you can "set it and forget it."
VERY handy! TINY app size to save space
Latest version: 2.2.4 (for all Android versions)