Brightness Control

Is an app that helps you to improve your phone battery life by up to 20%. By a simple switching between the night mode where the brightness is set to 40% and day mode where the brightness is set to 80%, This switching resulting in a battery life improvement.
The 20% result is obtained by hard testing on multiple devices for weeks with different users, without restrictions and restraint from using the smartphone in a normal way by each individual user.
To keep it free this app is supported by advertise.