USB Disk Pro for iPhone

USB Disk Pro for iPhone is a comprehensive file manager that lets you store, view, and organize documents on your device. It features an in-app document viewer, multi-document viewing, thumbnail previews, and a simple, intuitive interface with drag-and-drop transfers via USB or Wi‑Fi. It also supports popular cloud services like Dropbox, Google Drive, OneDrive, Box, and more.

Beyond basic viewing, USB Disk Pro offers file operations (copy/paste/delete/create), encryption with Apple Data Protection, integration with the Files app (file provider for iOS 11+), email attachments, background audio, and options for offline viewing, slideshows, and TV/VGA out. It supports a wide range of file types (PDFs, Office and iWork documents, images, eBooks, audio, video) and provides secure storage for other apps.