Play M4B/M4A/MP3 audiobooks on iPhone
BookPlayer is a wonderful player for your M4B/M4A/MP3 based audiobooks. You can easily import files via AirDrop or from other apps & manage books and playlists.
The player adopts to the cover colors and uses simple gestures to control playback. Chapters & a sleep timer are available, too.
BookPlayer is free and Open Source!