https://play.google.com/store/apps/details?id=com.vito.lux https://play.google.com/store/apps/details?id=com.vito.lux "Lux isn't your ordinary brightness app.

https://play.google.com/store/apps/details?id=com.vito.lux https://play.google.com/store/apps/details?id=com.vito.lux "Lux isn't your ordinary brightness app. It intelligently adjusts the brightness of your display based on the environment you're in. If you step into a dimly lit room, Lux will automatically lower the brightness of your display to make it not only comfortable to read, but to also preserve battery power." Fantastically wonderful app.