The app is designed specially for playing audio books.
Assumed that you have audiobooks and already copied them to your phone.
= Playback speed control.
= Classification of books (new, started, finished).
= Download cover from the Internet.
= List of characters. You can manually create a list of characters to easier follow the story.
= Automatic pause in case you fall asleep. To continue playback just shake your phone.
Varies with device