On Facebook:
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.

On iOS:
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.