Sleepio implements a well known and well proven sleep improvement system (basically to be in your bed only when sleeping, and get out of bed whenever you are not sleeping) that is typically very hard to stick with. Sleepios virtual coach "The Prof" is remarkably effective and helping you to stick with the program. But the app itself and the website are abysmal. Completely non-intuitive, contradictory information, difficult to find information, unclear "workflow." For the amount of money that this program costs (minimum $60) I expect better.
Mc510 about Sleepio