[alin23]

Hey thanks for the feedback! I know the UI is a bit too complex at the moment. It's hard to strike a balance between simplicity and configurability. It's still a work in progress.

So what does this do:

Lunar allows you to change the hardware brightness and contrast of the monitor (the one that can be controlled with the hardware buttons on the monitor)

If you simply want to turn down the brightness from time to time, you can set Lunar in Manual mode and use the brightness keys on your keyboard to adjust the monitor brightness.

Where Lunar shines is with a MacBook or iMac where there is an ambient light sensor integrated in the device that adapts the builtin display brightness. In Sync mode Lunar can sync that already adapted brightness to your external monitor so you don't have to worry about the brightness throughout the day.

There's also a Location mode if you want the brightness to adjust automatically based on the sun position in your location.

All this can be controlled through hotkeys which are visible in both the menu bar icon menu and the Hotkeys configuration page reachable by pressing the left arrow key 2 times in the Lunar UI.