There needs to be more apps like this; ones that solve simple everyday problems. I have always been the guy who is running around last minute asking the nearest family member if they can tie my tie. No more. Having the overlayed step-by-step with the camera, anyone can make a knot like an expert. I especially like the noise recognition feature where you can whistle to go to the next step - hands free! Also has a total of 10 different knot styles, each with its own difficulty. Perfect app for the gentelman who wants to dress to impress.