All Tracknack requires is the ability to update your playlist and let you know via email when an update happens. For a more personalized experience, Tracknack also imports data from your recent listening history and your saved music in order to provide relevant follow suggestions for you. We are committed to never abusing the privileges you grant us. If you suspect something fishy is happening, you can always delete your Tracknack account or revoke Tracknack’s access to your profile in your Spotify account settings (but please let us know first if you feel something’s not right).