Too bad..
I think this might be a very good app, but to stuff the free demo with very Loud and Annoying ads, for sleeping app, seconds after you start the demo, then another one, another one every other 4-5 seconds is really the most unprofessional way to sell your app.
If you really respected your clients, and had confidence in your product, you would find a smarter way to make it stick with them.
Too bad.
Sleepless in the Clouds about Sleep App - Insomnia? Relaxing music, lullaby game to help nap and meditate well & oasis