I found something about this app to be very grating; I suppose the style it uses feels pandering (or even patronizing) to me. Basically, the app is trying to make your habit-changing process into a journey or story, with colorful illustration and cheery narration, and for some reason I had an almost allergic reaction to it after a few days. I think it's great for people who like this style, but it just didn't appeal to me.