In the App Store there was a third version KyBook - one of the most functional reader for iOS.
The program supports many formats of electronic books and comics, such as EPUB, FB2, FBZ, RTF, TXT, PDF, DJVU, CHM, CBR, CBZ. There is even an audio book player for MP3, M4A and M4B.
The application has impressive capabilities. Here and change the interface, and advanced sorting downloaded books, dictionaries and the ability to connect, which is like reading a book in a foreign language.
Cataloguer in KyBook 3 will satisfy the needs of book lovers with huge libraries. Books may be grouped by author, topic, series, publishers and tags. There are separate categories for recently read, new, popular, or non-opening books.
Built-in editor allows you to take notes lecture notes. Recordings can then be exported to a Markdown. A very useful option for students.
KyBook 3 supports downloading books from the OPDS catalogs or from your own cloud storage: Google Books, Google Drive, Dropbox, OneDrive and "Yandex. Disk ". You can download books and devices on the LAN.
But the most interesting features KyBook 3 - working with decentralized Tor network. Even if your favorite site with books will be blocked, KyBook 3 still get access to it - just add desired OPDS-catalog of the books in the list of sources.
Most functions KyBook 3 are free, but to get access to advanced tabbed interface, auto and downloading books through the Tor, will have to purchase a Pro-license.