Do you fall asleep listening to audio books? Are you fed up with losing your place?
Audio Bookmark checks you're still awake, then saves your place in the story when you drop off to sleep.

When you play your audio book via this App, Audio Bookmark will play a subtle sound at regular intervals. It will continue to play your audio book if you touch the screen in response to the sound. If you don't touch the screen within 10 seconds of the sound, the player will stop. Next time you play your audio book, Audio Bookmark will start it from the place when you last touched the screen.

You can choose the sound (or vibration, if compatible) and set the interval on the Settings page.