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LEGO® Boost

LEGO® Boost

by LEGO System A/S

4.3K ratings
269 reviews
📚 Education
🎬 Entertainment
Free

Details

  • Released
  • Updated
  • July 24, 2017
  • April 21, 2026

Developer

LEGO System A/S
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LEGO® Boost screenshot #1 for iPhone
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About

Bring LEGO creations to life with this app! Use drag-and-drop coding to make models move, talk, and respond. Access building instructions and enjoy over 60 activities, or code your own unique models.

✓Drag-and-drop coding interface
✓Digital LEGO building instructions
✓Over 60 fun activities
✓Codeable LEGO models
✓Control LEGO creations from mobile device
✓Combine with other LEGO sets
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What users say

Summarized from real user reviews of LEGO® Boost. Based on 4.3K reviews and a 4.6/5 average, it highlights the 5 positives and 5 negatives reviewers mention most about this Entertainment app.

Positive things

  • 🚀Fun and engaging
  • 👍Great for learning coding
  • 🎨Excellent for creativity
  • 💡Impressive programming options
  • 🤖Enjoyable building experience

Negative things

  • 🐛Connectivity issues
  • 🔋Battery life problems
  • 📚Unclear instructions
  • 🤔Confusing programming interface
  • 🔍Difficulty finding parts
See all reviews

What's New in LEGO® Boost

1.9.9

April 21, 2026

Minor bug fixes

User reviews

Most RecentHighest RatedLowest Rated

Good but

Why are the videos not appearing ? Just wondering
Phillip!uPhillip!u

The worst ever

Full of glitches. Way to slow for the price of the let sets. Not worth it.
Dann 8Dann 8

Technology in 2025

I tested it in 2025 and I hate the 6 AAA batteries
Aalvarez90Aalvarez90

Good

The Lego boost is really good, but I’m wondering where the Lego boot Star Wars app is in the App Store
Minecraft player12345Minecraft player12345

Can’t sign in to Lego account anymore

So the app is so great and awesome but there’s one problem when I try to sign into my Lego account I sign in but then it doesn’t show on the Lego boost that I didn’t sign in. I do it multiple times, but never works. Plus, I even tried to re-download the app. But it never works. So even when I try to sign in it shows Lego life but Lego life is deleted so they puted a Lego play app. So if they updated Lego life. Why didn’t they update Lego boost? That’s why I’m not signing in. Please fix that Lego.
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Mezzagv01Mezzagv01
See 264 more reviews

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User experience

🐞

Reported Bugs

5 issues

App crashes and freezes

Bug

Firmware update failures

Bug

Bluetooth connection problems

Bug

Lost progress and build instructions

Bug

Sensor and motor issues

Bug
✨

Requested Features

5 requests

More advanced programming blocks

Feature

Ability to save and load projects

Feature

Improved instructions and documentation

Feature

Compatibility with more devices

Feature

Easier part organization

Feature

FAQ

What does the LEGO Boost app do?

The LEGO Boost app allows you to bring your LEGO creations to life by providing a simple drag-and-drop coding interface. You can build and code various LEGO models, make them move, talk, and respond to their environment. The app also includes digital building instructions for specific models and over 60 fun activities to engage with.

What are the key features of the LEGO Boost app?

Key features include a drag-and-drop programming interface for easy coding, access to digital building instructions for all five included LEGO BOOST models, and over 60 engaging activities. You can also imagine, build, and code your own unique creations, and combine the app with other LEGO sets like LEGO City and LEGO NINJAGO for expanded play.

Is the LEGO Boost app free to use?

Yes, the LEGO Boost app is free to download and use. It is designed to work with the separately sold LEGO BOOST Creative Toolbox set (17101). There are no in-app purchases or advertisements mentioned for the app itself.

What devices are compatible with the LEGO Boost app?

Device compatibility can be checked by visiting LEGO.com/devicecheck. It is recommended to ask for parental permission before going online and downloading the app.

What can I build and code with LEGO Boost?

With the LEGO Boost Creative Toolbox set and app, you can build and code five distinct models: Vernie the Robot, Frankie the Cat, the M.T.R.4 (Multi-Tooled Rover 4), the Guitar 4000, and the AutoBuilder. Each model offers unique interactive features and activities that can be controlled and customized through the app's coding interface.