I originally bought this to clean up photo duplicates, but it ended up being just as useful for documents, downloaded videos, and old archives scattered across my Mac and two external drives. It scans by actual file content, not just names, so renamed copies still get caught. Seeing the total space per category helped me decide what to purge first. A solid all-rounder for general disk cleanup.

What I appreciate most is that nothing gets deleted blindly. Cisdem Duplicate Finder groups matches and lets me preview each file, then its auto-select rules handle the drudgery, like keeping the oldest file or the one in a specific folder. I set it to always keep the original in my Pictures folder and remove copies elsewhere. It is fast, but more importantly it is safe, which is exactly what you want when cleaning up files you cannot easily replace.

I run Cisdem Duplicate Finder every few months as part of basic Mac maintenance, and it consistently surprises me with how much junk accumulates from app caches, repeated downloads, and backups. The scans are quick and the results are easy to parse, so the whole chore takes minutes. For the price it pays for itself the first time it frees up enough space to avoid buying a bigger drive. Quietly one of my most-used utilities.

Cisdem Duplicate Finder did a great job cleaning up my Photos library. It scanned quickly and the smart selection rules made it easy to keep the newest copy and remove the rest. Recovered a surprising amount of disk space without me having to think too hard.

A must-have utility if you're running low on storage. Worked perfectly on my photo library.

I was nervous about deleting files automatically but the preview and the fact that it moves duplicates to Trash first put me at ease. The interface is clean and the scan results are easy to read. Exactly what I needed.

My Mac was nearly full and I suspected years of duplicate downloads. This found them in minutes and categorized everything clearly. The similarity matching even caught near-duplicate images. Very happy with the result.

Honestly shocked at how much space I got back. The scan was thorough, the ignore-list option kept my working folders safe, and nothing important was touched. If your Mac is running low on storage this is the first thing I would try.

I import a lot of photos from multiple SD cards and end up with copies everywhere. Cisdem Duplicate Finder handles that workflow perfectly and the one-click auto-select saves me a lot of manual clicking. Worth the price.

I've tried Gemini and Duplicate File Finder before, and both made me nervous because the auto-select rules felt too aggressive — I was scared it would delete the wrong copy of something important. Cisdem's approach is way more transparent. It groups duplicates clearly, shows you both files side by side with full paths and file sizes, and you manually pick which to keep. The auto-select by oldest/most recent works well once you understand it, but I usually review manually anyway. Only thing I'd change: the scan on a really large drive (4TB+) can take a while, but that's just physics. All in all, this is the one I trust.