The Skyfort II is incredible. The instructions are ridiculously bad. Simple changes in the instructions by the manufacturer could have made a huge amount of difference. For instance, printing all of the names for the boards on either the top of the bottom so that we didn't have to figure out which direction each board went - this really matters for multiple pieces, and we had to redo things multiple times because the pictures were not terribly clear either. This was put together by 3 common sense adults who all have a lot of experience with construction, wood, large projects, and putting things together. It took us 3 days. It would have taken 2 with better instructions. The app was a joke. We tried to use it multiple times but had to repeat directions over and over to get what she was saying. We just stuck to the book instead. So, the Skyfort is amazing, but I knocked off a star for problems that could easily be solved by the manufactuer, but weren't.