Audible is awesome app to listen to audiobooks. It has over hundreds of thousands of audio books from Amazon available in it database. All kind of content from classic books to current bestsellers are available to listen on the go.
How Audible works?
Audible is app from Amazon and as you suggest it has huge selection of books to choose from. It lets you easily buy and download any audiobook you would like. Browse its contents by category and search for any title of your choice. This software has a lot of neat options to present you with best listening experience. They range from changing the speed of narration and navigating through chapters, to bookmarking favorite lines and working in background. The last one is especially good because it lets you listen to any book while doing other stuff on your device. There is an option to import any audiobook you have to the app.