We track an enormous amount of Spotify and Apple Music playlists and add new ones every day. New playlists will appear in your HeartBeat app within 24 hours after your track has been added to it. However, it can happen that a playlist isn't part of our database yet.
If you are missing a playlist in your HeartBeat app and it hasn't become available within 24 hours. Please reach out to us and include the link to the playlist so we can add it to our database.