Easy Unarchiver is a utility for iPhone that allows users to extract files and folders from various archive formats, browse and view documents within archives, and create new archives from files and folders. It supports a wide range of formats, including rar, zip, 7z, cab, tar, and more. Additionally, Easy Unarchiver can handle multi-volume archives and password-protected archives.

To open a document, users can either use the "Open an Archive" button within the app or open it from the share sheet in other apps. Once a document is opened, users can browse its contents by clicking on folders and preview the content of files without having to extract them.

The app also provides the ability to unarchive selected items or all items within the current directory. For users who need to create new archives, Easy Unarchiver offers the option to select files and create an archive, with support for passphrase encryption.

Overall, Easy Unarchiver is a versatile and user-friendly utility for managing archive files on iPhone. It provides essential features for extracting, browsing, and creating archives, making it a useful tool for users who frequently work with archived files.