Won't let me cancel. Be careful signing up for free trial because although they claim to tell you how to cancel, they just keep you searching in an endless loop... probably hoping you give up. The app says to go to the website but then the website asks the same questions that were asked before the free trial was started with no way to skip it. Then it tries to sign you up again. The app itself is only useful if you have a consistent schedule as far as what time you wake up and go to bed.