I'm testing different taglines for my iOS podcast player . It focuses on limited series and audio drama, so that's the tagline I've use so far. But it turns out most people don't have a clue what a "limited series" is (clue it's a series that has an end, kinda like a series on Netflix. So Serial is a limited series but This American Life is not).
I display this tagline below the app title in the App Store, on the landing page and on the sharing site.
"Short stories. Not short on content."
"Complete. Drama."
"A world of self-contained drama"
"The best drama. From start to finish."