Dupin icon

Frustrated trying to manage duplicate iTunes tracks on your Mac?
Of course you are!

iTunes' Show Duplicates feature is helpful but you still have to examine every single track and somehow decide whether you want to keep or delete the duplicates it might find.

Now there's Dupin. Your iTunes duplicates manager.

Dupin portrait
download purchase updating video & faq

Download the free demo
System requirements

A registration code is $15

Free if registration purchased
August 1, 2014 or later.
Out-of-date registrations
can be upgraded for $5

Quick Start video and common
support questions answered

With Dupin you can:

  • Very quickly find all sets of duplicate iTunes tracks based on your choice of criteria
  • Select the "Keeper" tracks from among a number of duplicates automatically using a variety of versatile filtering options
  • Consolidate the play, skip, and ratings information from all tracks in a Dupe Group to the single "Keeper" track
  • Re-populate iTunes playlists replacing "non-Keeper" tracks with "Keeper" tracks
  • Remove duplicate tracks from iTunes and send files to the Trash
  • Audition tracks with Quick Look
  • Manage intentionally duplicated tracks
  • Delete duplicate "dead" tracks
  • View duplicates in non-loaded libraries created with iTunes' multiple library feature
  • Sort tracks and view track info
  • Export a list of duplicates to a text file
  • Locate tracks in the Finder and in iTunes

In addition, Dupin features:

  • Compatibility with iCloud Music Library/Apple Music
  • Support for Notifications
  • Familiar iTunes-like interface
  • Robust Documentation via the Help Menu
  • Ample keyboard shortcuts
  • Customizable toolbars
  • Optional update checking

Dupin is easy to configure and use. Download the well-featured demo and try it out for yourself now.

What reviewers say:

  • "Dupin [does] a much better job than iTunes' Show Duplicate Items command of finding and zapping duplicate files, letting you easily tame overflowing libraries."
    - Jonathan Seff, Executive Editor, Macworld, "5 Essential Tools That Every iTunes User Should Have"
  • "Dupin comes in so handy, and for $15 it's a small investment for your sanity."
    - Dave Taylor, Mac Author, Ask Dave Taylor
  • "Dupin does an excellent job finding all those pesky duplicates and removing them from your iTunes library."
    - Roberto Baldwin, Mac|Life
  • "The app performs well and comes with an accessible interface and excellent functionality. If you have a large iTunes library, you'll love it."
    - Chris Page, Editor CNET's Download.com
  • "If, like me, your iTunes library is an unholy mess, I'd suggest you give it a spin."
    - Christopher Breen, Senior Editor, Macworld

System Requirements

  • Intel Macintosh computer running OS X 10.10 or later
  • iTunes 12 and later
  • Gatekeeper Security: Dupin is signed with an authorized Apple Developer ID
  • Dupin does not work with Microsoft Windows

Updated in Dupin v2.14.1:

  • Updated for compatibility with macOS 10.14 Mojave
  • Fixes issue when copying tracks to a new iTunes playlist using the same name as an existing playlist
  • September 21, 2018

Updated in Dupin v2.14.0:

  • More convenient navigation and selection controls in Info window
  • Improvements to playlist displays
  • Adds preference option to backup iTunes database files (XML and ITL) at launch
  • Fixed unusual issue that prevented Library Profile from working under some circumstances
  • Fixed issue with text color after Filtering
  • Other performance improvements
  • August 16, 2018

Complete version history

Purchase and Register Dupin

New Users...

The unregistered demo version of Dupin will display up to 20 sets of duplicate tracks per session and permit a single "Purge" operation per launch. Most other features are unencumbered.

A registration code for Dupin is $15.00.

After your payment is received you will be emailed a registration code and instructions which will enable Dupin to display all the duplicates it finds. You'll also enable me to continue working on Dupin and make it work better for you!

You can make safe and secure payments using your credit card by clicking the "Buy Now" button below.



This version of Dupin is a free update if your current Dupin registration was purchased on or after August 1, 2014.

If your v2.x registration was purchased before August 2014 then you can upgrade your registration for $5. Download and launch the current version of Dupin to make an in-app purchase.

(Dupin v1.x codes cannot be updated and a new registration must be purchased.)

Web mail users: There is a possibility that unsolicited email messages from me—such as the one containing your registration code—will be re-routed to your spam or junk mailbox. As soon as you receive the PayPal confirmation, check these mailboxes for the email containing your registration code. Otherwise, if you don't receive your code, let me know; it may take me a day or two to manually send you a code.

PayPal eCheck: Payments made by PayPal eCheck will take up to 5 business days to clear. (Your payment will be by eCheck if you do not have a credit card attached to your PayPal account or your PayPal account is "unverified".) As soon as your eCheck clears with PayPal your registration code will be emailed to you.

If you have any problems, ideas or suggestions, please email me.

My name is Doug Adams,
support at dougscripts dot com.

Currently, I can only accept payments electronically via PayPal. For other payment options, please email me at support at dougscripts dot com.

This application uses reasonable precautions to protect your data, but that is no guarantee against unforseen situations on your computer. I make no guarantees to this application's effectiveness on your computer and cannot take any responsibility if something goes wrong while using this application. If this makes you aprehensive then please be certain to backup your iTunes audio and video files before using.

Site contents © 2001 - 2019 (that's right: 2001) Doug Adams and weblished by Doug Adams. Contact support AT dougscripts DOT com. About.
All rights reserved. Privacy.
AppleScript, iTunes, iPod, iPad, and iPhone are registered trademarks of Apple Inc. This site has no direct affiliation with Apple, Inc.
The one who says "it cannot be done" should not interrupt the one doing it.

Go to the AppleScripts for iTunes section.