I built DedupX, a macOS app for finding duplicate and visually similar files fast - especially useful for photographers and anyone with big local storage collections.
What it does
- Exact duplicate detection using incremental hashing so it doesn’t have to fully load huge files.
- Perceptual image matching finds similar images even if they’re resized or lightly edited (not just byte-for-byte duplicates).
- Native macOS integration with a Finder right-click scan.
Why I built it: My brother kept running out of space because of tons of photos, and every existing tool I tried either missed similar images or was slow and clunky - so I spent a couple of weekends building something that felt fast, accurate, and native.
Business side
- Free trial (no CC required).
- Paid tiers: ~$5.99/yr or ~$16.99 lifetime.
Got positive feedback and 100+ paying users shortly after launch. Been growing steadily ever since.