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To download Duplicate Detector: Find & Delete Duplicate Files Fast from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.

Duplicate Detector: Find & Delete Duplicate Files Fast

By Eccentric Apps

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“Duplicate Detector proves to be a smart addition to my collection... simple to handle, doesn't take long to complete the scanning process, and at a reasonable price.”
5/5 stars – Mac Informer Editor's Pick – May 2014

Recover valuable hard drive space by deleting unnecessary duplicate files. Duplicate Detector is the simple & powerful solution to free up your disk!

All computers accumulate duplicate files and folders over time. You might save multiple copies of the same document, download an identical file or archive several times, or save the same email attachment in more than one location. These duplicates quickly grow to a large amount of wasted disk space, filling up storage and slowing down your computer.

Duplicate Detector solves the problem by scanning your system for duplicates and allowing you to remove those unwanted files quickly and easily.

• Drag and drop folders onto the scan selection window
• At-a-glance summary of wasted hard drive space
• Quick Look preview of any file before removal
• Double check and confirm deletion

• The fastest duplicate detection algorithm available
• Intelligent sorting by greatest disk space wasted
• One click to auto-select unwanted duplicates
• Unwanted files and folders are moved safely to the Trash

• Customizable auto-selection behaviour
• Preserve specified file types and folders
• Tweak performance by setting minimum file size to scan
• Scan multiple hard drives or network volumes

Duplicate Detector’s industry-leading ultra fast and accurate scanning algorithm makes finding and removing your duplicates a breeze. Easily delete those files, free disk space, and speed up your computer today!

Duplicate Detector is a free download, fully functional for your top ten duplicates so you can judge for yourself how easy and efficient it is to use. If you prefer the ability to clean all duplicates at once, the full version is unlocked through a low cost In-App Purchase.

What's New in Version 1.82

• Fixed a crash when scanning folder shortcuts.

If you find Duplicate Detector useful, please consider rating it in the Mac App Store.


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Customer Reviews

Crashed after a few days; now refuses to work.

I’m so frustrated with this app. I’ve been using it to try to de-duplicate a ton of confusing, nested photo folders in what used to be iPhoto and is now Photo Library (?), and after three days of intermittent use, it’s now just sunk into inoperability, and won’t recognize any folders, any files, nothing. It “sees” no files to inspect at all. I’ve tried every fix I can think of, and nothing works — this is just one big dead lump of software. Awesome.


Deleted (to the trash) the only copy of several files then promptly crashed. I can’t use put-back because its not an option so now I have 1100 files in the trash that I have to figure out what subdirectory they were originally in.

It actually costs $0.99.

It only clears 10 files for free. You have to pay for it to do a complete job. I’d rather they were upfront about that.

Duplicate Detector: Find & Delete Duplicate Files Fast
View in Mac App Store
  • Free
  • Category: Utilities
  • Updated:
  • Version: 1.82
  • Size: 2.6 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.8 or later, 64-bit processor

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