While the base app is feature-rich, the (included in GoodReader Pro or available as a subscription in the standard version) unlocks specialized tools:
GoodReader Pro is a robust PDF management and annotation tool for iOS, frequently used as a mobile "file hub" due to its extensive connectivity and organization features. It is known for its high-performance engine that handles large PDF files efficiently and offers advanced page-level management. GoodReader Pro PDF Editor
: Directly connects to and syncs with cloud services like Dropbox, Google Drive, OneDrive, and private servers (WebDAV, FTP, SFTP, SMB). "Pro Pack" & Encryption Features While the base app is feature-rich, the (included
: Enables Split Screen on iPad to view two different files or two different parts of the same file simultaneously. While the base app is feature-rich