Open the app, and the first thing you notice is the 3D instructions. Instead of flipping through a paper manual, you can rotate the model, zoom into a tricky connection, and see exactly where that tiny brick goes. It’s not a gimmick — it genuinely helps when you’re stuck on step 47 and the angle in the booklet is just slightly off. The app also lets you save your progress, so if you stop halfway through a build, you don’t have to guess which step you were on. Just pick up where you left off.

The scanning feature is the real standout. Point your phone at the box or the QR code on the instructions, and the app pulls up the right set instantly. No typing in set numbers, no scrolling through endless menus. It’s fast enough that you’ll actually use it. And if you’re a collector, the app keeps a digital library of every set you’ve scanned. You can sort them by theme, piece count, or even by how long they took to build. It’s a nice way to see your progress across the whole collection.

One thing that surprised me: the app works with sets you bought years ago. As long as the set is in LEGO’s database — and most are — the 3D instructions are available. So that dusty Star Destroyer you’ve been meaning to rebuild? You can do it without the original manual. The app also tracks which pieces you’ve placed, so if you drop a brick, you can backtrack without starting over.

This is the kind of app that’s perfect for anyone who builds more than once a year. If you’re a parent helping a kid through a set, or an adult who likes to build in short sessions, the 3D view and save feature make a real difference. One tip: use the zoom function on complex steps — it’s way easier than squinting at a paper fold.