ImageExifEditor 5.3 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This software for Mac OS X is a product of hummersoftware. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The application lies within Design & Photo Tools, more precisely Viewers & Editors.
From the developer:
The BEST and EASIEST way to VIEW and EDIT image's EXIF metadata.
Image Exif Editor was designed to present as many details about how a photo was taken in a clear and easy to understand format with powerful EXIF metadata editing capabilities. It's the most powerful tool to handle the EXIF information in your favorite images.
You may want to check out more software for Mac, such as Corel Painter Sketch Pad, ImageBuddy or Downsize, which might be similar to ImageExifEditor.