Can't you already do this without a 3rd party app? http://i.imgur.com/khCkMNf.jpg http://i.imgur.com/khCkMNf.jpg edit: Oh, this app isn't about the Touch Bar!

Can't you already do this without a 3rd party app? http://i.imgur.com/khCkMNf.jpg http://i.imgur.com/khCkMNf.jpg edit: Oh, this app isn't about the Touch Bar! It's about toggling the functionality of the regular function keys between F1, F2, etc... and their media/shortcut labels.