Crashed my Mac
I tried it on a small folder and it worked nice but found a lot of dups of small files - not worth the effort of picking which to delete. I raised the threshold in preferences to ~300k and ran on my documents folder. It worked for 5 or 10 minutes finding 10 dups, 760 files checked, then just sat there not changing for another 20 minutes or so frozen. So was my Mac. Couldn’t Cmd-Alt-Esc, couldn’t click on anything, any app, any window, nothing. Finally had to turn my mac off and boot up again. Deleting this app. Waste of money.
rrobinsn about
Duplicate File Cleaner - Find and Delete Your Duplicates