I’ve tried Gemini and Duplicate Cleaner and they found absolutely NOTHING in my iPhoto library. I was so frustrated. I decided to give another app a chance, and finally this one worked! Freed up at least 2 gigs in my library. Now I wish I would have purchased the full Photo Sweeper version instead of the lite, but I don’t see an option to upgrade. Also, this worked blazing fast. Great job, guys!
CaliforniaExpert about PhotoSweeper Lite