Kotobee Author 

Kotobee Author is an e-book creator and EPUB editor, allowing you to add interactive content that can be opened not only through Kotobee Reader, but any EPUB 3-compliant reader. Convert your PDF to EPUB, customize the look-and-feel of your e-book apps, and emulate the result on different platforms and devices. Export your e-book to one of many formats, to have it running on external e-book readers, inside the web browser, as a desktop application, or natively on mobile.