A free program for Android, by Lanjingtech.

If you are an avid reader, then you will definitely love this app. The app allows you to do the following:

• Change the font size (only available for the epub format)
• Use the navigation bar in the side column to jump among different chapters
• Add bookmarks whenever you need, and browse these pages later
• Move the brightness slider to adjust brightness and shift to Night Mode
• Use the new eye-care mode to reduce your eyestrain.

If you like to read books, you can use this app to find the books you like to read. You can also write your own book if you like.