The Knot Kneedle® app will allow you to take all your knot tying video tutorials with you even if you don't have cell service! Just download the The Knot Kneedle® app and save the videos of the specific knots you tie on your device. It's that easy, just like how easy it is to tie knots with the Knot Kneedle® "Spend more time fishing, less time tying!"