Attachments and Downloads
Open up archives attached on e-mail messages and downloaded from the Web directly on Safari.
Preview Archive Contents
A powerful previewer allows you to quickly take a look at each of the files contained inside the archive, and depending on the file type (and your installed Apps) to perform several actions on them.
Dozens of Formats
Zip, RAR, gzip, bzip2, ISO images - you name it. Over 50 formats are currently supported. And password protected archives can be opened as well (provided you know their password, of course).
iTunes File Sharing
Archives opened by the App are available through iTunes File Sharing, which you can also use to add new archives to the App.