LEGO® Builder is a digital application designed to improve your LEGO building experience by offering interactive 3D instructions for LEGO sets. Users can view models from all angles, zoom in for details, and follow step-by-step instructions, making it a digital companion to traditional paper manuals. It helps in building complex models with confidence and accuracy.

LEGO® Builder is free to download and use, with no subscription or in-app purchase requirements for its basic features. Users need to own physical LEGO sets to access instructions for those sets, as the app provides guidance for physical models rather than digital building. There are no hidden fees, making it accessible to all LEGO fans.

The app is available for Android and iOS devices. Android devices need Android OS version 5.0 or higher, while iOS devices require iOS 11.0 or later. It is optimized for both smartphones and tablets to ensure a smooth experience. Users should verify their device meets these requirements for optimal operation.

LEGO® Builder provides interactive 3D instructions that allow rotation and zooming, helping users understand complex steps more clearly and reducing errors. The app stores a digital library of instructions, which simplifies finding the needed guide without sorting through paper manuals, offering a modern upgrade to traditional building.

The app supports a wide range of current and recent LEGO sets. It is regularly updated with new sets, but may not include instructions for older or discontinued models. LEGO aims to broaden its library, so users should check back often. For very old sets, traditional paper instructions might still be necessary.