Now playing allows you to find a tab for the particular song you're listening to.
Now Playing works with Spotify, Apple Music, Google Music.
To see the tab of the song you're listening to:
Play any song on your phone player (Apple Music, Spotify, etc.):
Open the Ultimate Guitar: Chords&Tabs app.
Go to Search.
Tap on the Now Playing.
Note: You need to give access to your media library (if requested) to use this feature.