I used to use the free portion of this app, but now it's all paid, so I sucked it up and subscribed because it was helpful to wind down at night to sleep. Now that my free trail period is over, the sleepcasts have been timing out every few minutes when my phone screen locks. It's counter-productive to have to pick up your phone every 3-5 mins to use the app. I'm not happy I paid for a whole year. It seems others are having this issue too and I don't see any comments about a fix in the works.