As a Scout leader, I find this app SUPER-HELPFUL, being able to show someone, (including myself), step-by-step, how to do some really difficult knots, as well as, the easy ones. Sometimes one may not remember, how to do a specific knot tied before, & this app gives you an easy, “oh yeah, now I recall” quick reminder, which is really handy. It’s fun to watch the “lightbulb” go off, so-to-speak, in someone else’s face, as they “get it,” when this app is able to show, (most of the time), with great ease, how to tie a knot, step-by-step. Being able to slow down, or speed up, the steps, as well as being able to turn the view around, to an opposite viewpoint. It’s great! I HIGHLY recommend this app. It is the absolute BEST, at showing how to tie knots. In fact, today, I am telling all of my fellow leaders in my troop to download this app, as we are responsible for teaching some knots to some fellow scouters, and scouts, at an upcoming camp-o-ree. Thumbs up, 5 stars. Kudos to the app developer(s) on such a well-done app!