FileKeeper is a very useful file manager specially designed for android.

FileKeeper is a very useful and easy-to-use file manager specially designed for android devices. This file manager is fast, free, and packed with advanced features that are extremely easy to use. With this file manager you can manage all files and folders on your phone with just a few taps. FileKeeper helps you like an assistant, allowing you to quickly view all categorized folders and files. Make your life simpler and easier.