LibriVox Audio Books provides free access to over 15,000 audio books and thousands of radio dramas. Each audiobook can be streamed over the internet or downloaded for later use. The LibriVox Audio Books app features classic best sellers and out of print treasures from every genre of literature.
https://itunes.apple.com/us/app/librivox-audio-books/id596159212?mt=8
Source: Librivox App in iTunes