The app is easy to use, but it's missing a lot of sets including newer ones. Surprising. Edit: To the developer who responded, I could also read the instruction manuals that came with the sets, but that wasn't my point. The person who founded LEGO was a Danish man by https://trevortwxzz.actoblog.com/19145354/brinquedo-lego-contrução-coisas-para-saber-antes-de-comprar