Great idea, but app is functionally useless as of this release – Shotify Review

The app requires the user to select a playlist, but as others have noted, the app does not fetch your list of playlists. Further, it does not give the user a way to back out of the playlist selection view, so you've essentially navigated yourself into a dead end. As of this release, the app is unusable.
Review by mikertr on Shotify.