LEGO® Builder: 3D Instructions

LEGO System A/S

About this app

LEGO® Builder is the official building instructions app for LEGO® sets that guides you on an easy, fun, and collaborative digital building adventure.

Build your set like never before:

- Step into a new way of building with an intuitive 3D building experience that lets you zoom, rotate, and view LEGO® sets from every angle.

- Use step-by-step digital building instructions to see each brick clearly and bring your set to life with confidence.

Build Together with friends and family!

- Build Together is a fun, social building experience designed for multiple builders to work together.

- You can team up and divide tasks to complete your LEGO® set as a group - perfect for fun social family nights, birthdays, or holidays like Valentine’s Day, Easter, Mother’s Day, Father’s Day or Christmas.

- Share a PIN code to join as a host or builder, take turns completing building steps, and collaborate to finish the model together.

- Check in the app to see if your LEGO® set can be built using the Build Together feature.

Discover thousands of LEGO® instructions

- Explore a digital library of LEGO® building instructions from 2000 to today.
- Search by set name or number, or scan the QR code on your instruction manual to open it instantly in the app.

Follow a story as you build

- Unlock enriched content and guided building experiences for select LEGO® themes, bringing extra fun and imagination to your 3D building journey.

Unlock more with a LEGO® Account

- Save your progress, build a digital collection of your LEGO® sets, and track your total number of bricks.

- Pick up right where you left off - anytime, anywhere.

Track your building journey

- Now you can keep a record of your completed sets, see your total bricks built, and celebrate your progress as a LEGO® Builder.

Things to keep in mind

- You’ll need a stable internet connection to use this app. We’re always adding new digital building instructions so you can expand your collection, explore new sets, and find even more ways to build together.

- Want to know if your set includes digital instructions or Build Together mode? Check in the app and start your collaborative adventure today!

We're eager to hear how we can make the LEGO® Builder app even better for you! Please leave us your thoughts and recommendations in the reviews to help us make the LEGO® Builder app even better.

LEGO, the LEGO logo, the Brick and Knob configurations, and the Minifigure are trademarks of the LEGO Group. © 2025 The LEGO Group.

Ratings and reviews

Absolutely ridiculous app, especially for being such an expensive brand! My twins are obsessed with Legos so we have a TON of sets. Trying to register them is BEYOND frustrating. I scan the QR code, it takes me to the web page, which then tells me to download the app. I download the app, scan the QR code and it takes me to the web page and tells me to download the app- that I JUST came from. Come on Lego, do better. My twins are 9 and have over 60 sets and we've barely been able to register them

This is a five star app for the latest sets, hands down. But I had to dock two stars because the presentation of older sets is very poor. I decided to build set 21024 (The Louvre from the Architecture Series), but instead of the 3D presentation, you get a low resolution scan of the instructions. Architecture series instructions have a lot of notes in a small font, and they are often unreadable in the app. Zoom in and the words are a pixelated mess.

I just discovered this app can track my collection. I added all the sets I could remember, and that were in the app. I hit 175 sets and over 110k bricks. I.. may have a problem. I can't wait for future updates to continue adding older set support! Only negatives are that it is not easy to bulk add things, or add multiple copies of a set. But that is minor compared to it's primary use.

What's new

We've made the LEGO Building Instructions experience even more awesome. How? Well, we fixed some pesky bugs and improved performance in the app. Now you can build even bigger, better than before!