What are some alternatives?
When comparing Files and FileApp, you can also consider the following products
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.
iFile - If you need a new file manager for your device, iFile might be the answer you seek.
Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
Documents by Readdle - A central hub for all your files.
FreeCommander - FreeCommander is an easy-to-use alternative to the standard windows file manager. The program helps you with daily work in Windows. Here you can find all the necessary functions to manage your data stock.
Filza File Manager - Explore files and folders with list view or grid view. View / edit files with powerful viewers.