Doesn’t work with external monitors!
It does what it advertises, unfortunately it doesn’t work with external monitors on the MacBook Pro. I’m running Mavericks, so the icon appears in the status bar of both monitors, but the program is only able to dim my laptop’s screen.
Hopefully this feature will be added in a (near) future release.
Also I can’t find a way to contact the App’d developer, as the “Support” link in the App Store goes to a nonexistent website.
KitVan about
Dimmer Than Dim