Kitsmith / Utilities / Duplicate File Finder
Duplicate File Finder
Free (find and remove duplicate files, folders, and similar photos); in-app "Upgrade to Pro" purchase adds duplicate-folder removal, folder merging, and Auto Select — exact Pro price not listed as a static number on this page, check the Mac App Store listing
Price checked at source August 28, 2026.
Nektony’s free-to-start duplicate and similar-file finder — scans folders, external drives, and Photos/Music libraries, with byte-for-byte comparison and safe Trash-based removal.
Our take
The free tier already does real work: find and remove duplicate files and folders across any disk, external drive, or Photos/Music library, with byte-for-byte SHA comparison for accuracy. The Pro in-app purchase adds the features power users actually ask for — removing duplicate folders (not just files), merging similar folders together, and Auto Select rules for bulk selection. Notably Apple-notarized and, per Nektony’s own site, a 10M+-download, 4.6-star track record — not a fly-by-night utility.
- Price
- Free (find and remove duplicate files, folders, and similar photos); in-app "Upgrade to Pro" purchase adds duplicate-folder removal, folder merging, and Auto Select — exact Pro price not listed as a static number on this page, check the Mac App Store listing
- License
- Proprietary
- Requires
- macOS 11 or newer, per Nektony.
- Get it via
- Mac App Store
- Developer
- Nektony LLC
Do you use Duplicate File Finder?
Who made this
Nektony’s own About page names Sergiy Savenko as co-founder, alongside CTO Yuriy Varbanets — the two brought "10 years of software development experience" before launching the company’s first app, Disk Space Analyzer, in 2011.
What it does
Byte-for-byte comparison
A dedicated Compare Files/Folders mode confirms whether two items are true duplicates rather than just similarly named.
Similar-photo and -music detection
Finds near-duplicates, not just exact copies — a series of near-identical burst shots, or the same song ripped twice.
Safe removal with history
Duplicates go to the Trash by default (recoverable), with a removal history you can review afterward.
Duplicate File Finder — questions people ask
Is Duplicate File Finder free?
Yes — the Mac App Store listing is free for finding and removing duplicate files, folders, and similar photos. A Pro in-app purchase unlocks duplicate-folder removal and folder merging.
Can it find similar (not just identical) photos?
Yes — it detects both exact duplicates and similar/near-duplicate photos and music, per Nektony.
Who makes Duplicate File Finder?
Nektony LLC, a Mac utility developer that also makes App Cleaner & Uninstaller.
Is Duplicate File Finder free?
Duplicate File Finder is free to use with optional paid unlocks.
Does Duplicate File Finder work alongside a notch app like Alcove?
Yes — Duplicate File Finder lives in the screen, so it runs happily alongside any Dynamic Island hub or notch app.
Where can I download Duplicate File Finder?
Duplicate File Finder is available via Mac App Store.
Reviews
No public ratings yet. Reader reviews are coming to Kitsmith soon.
Listing hand-verified August 28, 2026 from the developer's site and public sources.
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