Feature description:
Custom tags/field names are limited to a list of predefined tags.
Problem solved:
I was trying to display a track’s playcount on the Now Playing screen. There are five strings one can add in the bottom, with a list of different tags to choose from. Playcount isn’t one of them, but luckily there’s a custom option. Well, it’s not really custom, it just expands the list a little bit. I was expecting to be able to write any tag name and have the app extract the value for that (if it exists).
Brought benefits:
Be more flexible with what tags to display.
Other application solutions:
Additional description and context:
Choosing “Custom” string, then open String templace, and tap the question mark. This brings you to a page that shows a list of “available field names”. I assume this is it, and there’s no more hidden ones.
Screenshots / Mockup: