Use APKPure App
Get Dimmer ( Night Mode ) old version APK for Android
Dim lo schermo verso il basso per la luminosità minima ammessa con un solo tocco.
Dim your screen to the minimum allowed brightness with one touch - this is dimmer than 'Display Settings' allows you to go. Great for night time use.
Android 1.6+
Donations welcome by purchasing 'Cleaner Pro'
Thx to DipeshB for the idea.
Touch again to restore brightness.