What are some alternatives?
When comparing Files-finder edition and Documents by Readdle, you can also consider the following products
Filza File Manager - Explore files and folders with list view or grid view. View / edit files with powerful viewers.
Documents Pro 7 - The ultimate all-in-one mobile office suite for the iPhone and iPad with 8 premium apps in 1.
iFile - If you need a new file manager for your device, iFile might be the answer you seek.
GoodReader - With GoodReader on your iPhone, iPod Touch or iPad, you can read virtually anything, anywhere.
FileBrowser - FileBrowser is a multifunctional file manager for the iOS devices that are used for accessing files in both local and networked environment.
FileApp - FileApp is an iPhone and iPad File System and Document Viewer.