This app does not need to make zip archives.

Right click (or control click) on the folder you want to zip and select compress. This will create a zip NATIVELY in OSX. You dont need an application do to this. Anyone giving this app 1 star for its inability to create a zip file lacks a fundamental understanding of the OS to make that criticism.

That being said. Four stars for the ability to open the archives that OSX doesnt open by default which is why anybody should purchase an application like this.

Steven Dawson about iZip - Zip - Unzip Tools for Archive Files