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Scan sets, track your builds, and enjoy intuitive digital instructions.
By Irfan Rosli
News editor
LEGO® Builder is the official building instruction app for LEGO sets, published by LEGO System A/S. It replaces paper booklets with a digital version you can rotate and step through on a phone or tablet. The listing aims it at anyone building a set, and at groups who want to build one together.
The app has two main parts: a 3D model viewer and a set of step-by-step instructions. A third part, Build Together, lets several people work on one model at once. The listing also says the app can scan sets and track your builds, though the description does not go into detail on either.
The build we hold is LEGO® Builder: 3D Instructions 4.3.10 (APKS split bundle) for Android 8.1 and up.
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The 3D view lets you zoom in on a model and rotate it to see it from any side. That helps when a step is hard to read from the printed page, such as a connection hidden at the back of a build. The listing describes the viewer as a way to see each set from every angle.
The step-by-step instructions show each brick as you go. You move through the steps in order and see which pieces the current step adds. The listing presents the instructions as a way to build with confidence and see every brick clearly.
Build Together is designed for several builders on one set. One person opens a session as the host and shares a PIN code, and the others join as builders using that code. The group takes turns on building steps or divides the tasks, then finishes the model together.
The listing points to family nights, birthdays and holidays as typical occasions for this mode. Before starting, you can check in the app whether your set can be built with Build Together. Not every set supports it.
The app includes a digital library of LEGO building instructions covering sets from 2000 to the present. You can use it to find instructions for a set you already own, including older sets whose paper booklets are no longer around. The listing describes the library as the main way to discover instructions in the app.