Let Sleep For Spotify is a simple sleep timer for Spotify with a nice interface. This app stopps the current program of Spotify after a preset time and set your Mac into sleepmode if you like.
Let Sleep For Spotify shows the title currently playing in a little window, if you like on top to other apps. You can use this app as a miniplayer for Spotify. You can play/pause Spotify or switch to the next or previous song.