Harken

If you've ever had a song vanish from a Discover Weekly or Release Radar playlist before you got around to saving it, you know how frustrating it is to know the song existed but have no way to find it again. Harken is a Spotify tool built specifically for that problem, helping users track down songs they've lost in auto-generated playlists before they're gone forever.

Harken tracks daily changes in your Spotify playlists, letting you identify exactly what was added or removed each day. The playlist rewind feature means you can roll back to any previous state to recover a track you missed, and built-in analytics give you a richer understanding of how your playlists evolve over time. It's the missing layer of control that Spotify doesn't give you natively.