Gyan Reader is described as 'eBook Reader that supports epub 3 format and lso backward compatible. It is an advanced epub3 rendering engine for Android platform' and is an app in the News & Books category. There are more than 50 alternatives to Gyan Reader for a variety of platforms, including Android, iPhone, Windows, iPad and Android Tablet. The best alternative is calibre, which is both free and Open Source. Other great apps like Gyan Reader are Okular (Free, Open Source), Evince (Free, Open Source), Amazon Kindle (Free) and FBReader (Freemium).
Calibre is a free and open source e-book library management application made by users, for users. Many languages, designed around the concept of the logical book, i.e., a single entry in your library that may correspond to actual e-book files in several formats.
Evince is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS, SyncTex support with gedit, comics books (cbr,cbz,cb7 and cbt). For a comprehensive list of formats supported, see Supported Document Formats.
Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and Android-based device. You can discover and read over 630,000 books in the Kindle Store, including the latest bestsellers and new releases.
Innovative book reader with powerful controls & full functions: • Read thousands of ebooks for free, supports online ebook libraries • Read local books with smooth scroll and tons of innovation Support epub, pdf, mobi, chm, cbr, cbz, umd, fb2, txt, html, rar, zip or...
Google Play Books lets you search, preview, and buy millions of books using Google Book Search. Books in the public domain and certain copyrighted books can be read and downloaded in their entirety for free.