A free app for Android, by Mikhail Bykhovskiy.
This free Android app is a user-friendly brightness control widget with a built-in dimmer. It is the best solution for people who want to control the brightness of their smartphones and tablets.
It is the simplest and most intuitive way to make your screen dimmer. Just install the app and start using it. You will be able to dim the screen of your device to a specific level. You can choose from the predefined settings, such as minimum, normal, and maximum.
The app also has an option to make the screen dimmer in a specific area, such as the screen of your device, or the area you have set.
The best part of this app is that it is free. You will not have to pay a single cent to use it.
