Helpful to schedule as follows.
- In the morning, set the screen a little dark.
- In the afternoon, set the screen bright .
- In the night, set the screen dark.
In addition to the scheduling function, there is also a widget that you can quickly change the brightness.
Adjust the brightness well, will save the battery!
This app is the free version with ads.
Registration schedule limited to 3.
There are other apps -> https://market.android.com/developer?pub=in-trinity
YouTube -> http://www.youtube.com/user/intriandroid
Twitter -> http://twitter.com/#!/In_Trinity
Facebook -> http://on.fb.me/vDUVnp