Free download Open Book Reader APK for Android, PC. Latest version is 1.1.20130324, update at September 16, 2015
Open Book Reader version 1.1.20130324 is only one variant.
OpenBook is an e-book reader. OpenBook supports ePub and fb2 file formats. If you have any files in supported formats (epub, fb2, txt …), just put them into “Books” directory...