The application is offered in PRO version as well but I think the differences are not so important after all. You can use it in free mode because it simply does its job perfectly. Anyway, here are the features not available in the Free version:
Copy/move to your favorite folders.
Save reports as HTML and CSV files.
Select files with the same extension/folder.
Remove the selected files from the copy queue.
For more information, access the official website.