If you log in to Spotify with Facebook and have it set to sync to your Facebook listens, Bandsintown will scan those listens for artists to Track.
1. Tap Settings in the bottom right
2. Tap Spotify under Linked Accounts
3. Login to your Spotify account
Note: You need to be a Spotify premium user in order to sync from Spotify on iOS.
Syncing from Spotify to Android is not available at this time.