The app desperately needs a workable sleep timer. If you haven't fallen asleep when the timer runs out, you have to grab the phone and go through the process again. At the very least the app should remain in sleep timer mode so that you can just push the play button to start the timer again. The slider to set playback speed is also very inaccurate. They should have some preset buttons. Until these features are corrected, I am converting to MP3 and listening with Smart Audiobook Player.