This app is worse than useless, as it burns a lot of your time before it proves itself to be useless. After a long, slow scan of my local music files, it was successful in finding duplicates, but made a lot of mistakes in identifications. That's not a huge problem. What is a huge problem is that when you I try to manually fix the selections, the app forgets which items have been selected / unselected. So frustrating! And there doesn't seem to be anyone to contact about this. No idea how this app passed Apple's App Store requirements. Steer clear of this useless, super-frustrating app.

This does not look at your Apple Music library. It only looks at your downloaded local files and deletes them. If you have 5500 songs in Apple Music but none of them are sitting locally on your hard drive, this software will not look for the duplicates and delete them. I have 2700 duplicates in Apple Music, but this gave me zero matches.

Waste of a lot of time!cDidn't remove the found duplicates.

Not sure what the other reviewers are writing about. This works as advertised.I had to point the software to the correct directory where the music files are stored. Once I did that, it took about 20 minutes for the software to find all of the duplicates. The software provided a batch delete function.Works as advertised.One other thing...I have a lot of classical music. And if the same piece is performed by two different artists, it kept both versions.Like I wrote...not sure what the other reviewers had problems with...but this works as advertised.