I made an UnZip and updated the Zip version to 1.0.3
First I wanted to thank pdurrant so much for writing the EPUB Zip script!
However I disagree that unzipping is so easy. I've had some EPUBs that do not properly unzip with the Finder's native unzipper (and renaming your files is a pain if you need to do it a lot). Using pdurrant's code as a reference, I went ahead and made an UnZip app that uses the terminal command which I find more reliable.
While I was at it I updated the EPUB Zip 1.0.2.app to remove the confirmation dialog at the end (to speed things up) and make the dialog messages more consistent with the UnZipper I created.
Here's the new version for all to enjoy. It contains:
EPUB UnZip 1.0.app
EPUB Zip 1.0.3.app
Thanks again for your contribution.