ReadHub is a powerful reading tool. Includes the following features:

- Compatible with the source of reading 3.0
- Supports local import of mobi format files for TXT, PDF, Epub, And Kindle
- Support text reading, a variety of voices to choose from
- Global caching/downloading is supported
- Free source change to search and read at will
- Free to set background, font, spacing
- Supports simulation page-turning, up-and-down swipes, and more
- Press and hold to copy the contents of the book, add notes, bookmarks, etc
- Remote font
- Customize the bookshelf

ReadHub does not provide anything and does not have a server. It's just a content parsing and viewing tool.
You can import sources shared by others, or share your favorite sources with others