ADD will never delete anything. Detected duplicates are simply tagged with keywords. They are: •ADD Unique •ADD Processed •Date Duplicate •Filename Duplicate •Hash Duplicate •Hash Original •Hash [x] Set:[] •ADD Similar [x]

ADD was designed from the ground up to be safe. Safe with respect to your images and the Aperture library. ADD uses only approved Apple APIs. It communicates directly with Aperture in order to get its job done; guaranteeing that there will be no “funny business”. We have not reverse engineered the Aperture database in order to achieve our goals. We certainly had the option to do that; but decided it was too risky of a proposition given that the structure changes with almost every update to Aperture. The APIs on the other hand have remained stable. The bottom line is that ADD is the safest way available to remove duplicates from your library.

When processing is complete, check your keywords for Hash Duplicate, Date Duplicate, or Filename Duplicate. . . . If you've used ImageIQ look for "ADD Similar 0" through to "ADD Similar 8".

It certainly makes the chore of de-duping easier.

Basic usage guidelines are available here.

We can also automatically generate some smart albums that are very appropriate for processing your duplicates. See this article for further details and instructions.