• Free – Menu > Brightness
• Pro – Menu > Brightness (Day) or Brightness (Night), depending on the current time of day or the night/day setting

A slider controls the brightness level from the minimum brightness the device supports to the maximum.

The checkbox ‘Use Device Brightness’ will cause the app to be the same brightness as the devices setting (either manually set or Auto in Android settings).

Brightness dialog

The default brightness is set quite low by default.