When you take into consideration that YouTube is FREE and has 1000s of patterns, this app provides far too few patterns to be worth its price tag. The instructions are vague and I fear that the average beginner will have a hard time following along. And, please understand that fly tying is an art and as such, we all have different opinions on how our flies should look when finished. That said, there are some flies in this app that just dont look "right" to me because they arent tied the way Ive always tied them. Will they still catch fish? Sure. Will they catch more fish than a traditionally tied version? Maybe, maybe not. What I do know is that this app needs serious improvement before I will consider using it again.