Great app - bugs with latest updates though 😥 I've enjoyed using the Material Player app for the last year and a half. The user interface is very clean and intuitive  which sets it apart from many other audiobook apps. Unfortunately  I have experienced issues on my Galaxy S6 with the latest updates which has made the app extremely buggy and effective unusable. If these can be resolved I am happy to return to using and will rate 5 stars.
December 04 2016