The program is designed specially for playing audio books.
Assumed that you have audiobooks and already copied them to your phone.

Features:
+ 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.
+ Playback history.
+ Application Widget. Allows you to control the player from the home screen.
+ By specifying a root folder containing all your audiobook, you can exclude your folders which contains music and other audio files.
+ You don't have to finish one book to start another. The progress is saved independently for all books.
+ NO ADS!
To purchase (restore after reinstalling) full version press:
menu--Help--Version tab
Phone must be connected to the Internet.
Full version cost is $2.

VirusTotal: https://www.virustotal.com/gui/file/965966a0e8218b1f386ba91a3ebb2c770549bcf52e8a26b7f5e0079c8e532f58