The Brite Toggle Widget allows for easy switching between three preset display brightness levels.
With the widget on the home screen you can easily select a consistent screen brightness setting based on the surrounding lighting to make for more comfortable viewing.

Tapping the widget cycles through each display brightness level. You can easily customize the desired display brightness levels. Customize the screen brightness for day, night, and outdoor use.
Using preset display brightness levels may reduce battery usage and yield more aesthetic and consistent results than most adaptive brightness settings.

The maximum brightness range can be configured to accommodate the handling of screen brightness among different devices.

Android "WRITE_SETTINGS" permissions are required in order to change the display brightness.