Comparison

LEGO® Boost vs LEGO® Builder

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

LEGO® Boost

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.

Highlights
  • 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
Features
Read full description

The LEGO® Boost app is available for download until January 1st. Combine this app with the LEGO® BOOST Creative Toolbox (17101) set to bring your creations to life! Enjoy more than 60 fun activities with simple drag-n'-drop coding, watch videos and access digital LEGO Building Instructions. Have fun with LEGO models that can move, talk and respond to real-world events. Take your experience to another level with advanced coding. Build and BOOST your own robot toy creations and control them from your mobile device. All it takes is three simple steps: BUILD, CODE and PLAY! Is your device compatible? Please go to LEGO.com/devicecheck to check if your device is compatible. Ask your parents’ permission before going online. LEGO® BOOST App Feature List - Access digital LEGO® Building Instructions for all 5 LEGO BOOST models included with the 17101 LEGO BOOST Creative Toolbox. - BUILD, CODE and PLAY with CODABLE LEGO® models. - Bring your LEGO® BOOST creations to life with the simple drag-n'-drop PROGRAMMING interface. - Enjoy more than 60 fun ACTIVITIES. - Imagine, build and code your own creations. Kick-start your creativity—3 inspirational models included with the app. - Combine 17101 LEGO BOOST with the LEGO® City 60194 Arctic Scout Truck to control and drive the vehicle! Use the app to operate the forklift, examine samples with the color sensor, help the whale back into the water and much more. - Combine 17101 LEGO BOOST with LEGO® NINJAGO® 70652 Stormbringer and set the Lightning Dragon free! Use the app to control the fearsome beast, fire the shooters, create a color-sensing ejector seat and much more! - Go to LEGO.com/devicecheck to check if your device is compatible. Ask your parents’ permission before going online. LEGO BOOST set (17101) Feature List - Includes 844 LEGO® pieces, plus a LEGO Move Hub, Interactive Motor and a Color & Distance Sensor. - Move Hub features Bluetooth Low Energy (BLE) connectivity, 2 encoded motors, activation button, internal tilt sensor and a light. - Interactive Motor is an encoded motor. - Color & Distance Sensor detects distance, motion and color, and can also function as a light. - Create and code Vernie the Robot, Frankie the Cat, the M.T.R.4 (Multi-Tooled Rover 4), the Guitar 4000 and the AutoBuilder. - Rotate Vernie’s head to activate its shoulder-mounted spring-loaded shooter. - Build the M.T.R.4 (Multi-Tooled Rover 4) and try out the different tool and customization attachments for an array of exciting activities. - Learn songs and rock out with the Guitar4000! - Look after your own pet with Frankie the Cat. Be sure to feed it the right food—or it might get upset! - Construct, code and operate the AutoBuilder to produce real miniature LEGO® models. - Build and code robots and models, and complete exciting activities with the playmat and intuitive LEGO® BOOST app. The LEGO® BOOST Creative Toolbox set (17101) is sold separately. For app support contact LEGO Consumer Service. For contact details refer to http://service.lego.com/contactus Our privacy policy and terms of use for apps are accepted if you download this app. Read more on http://aboutus.lego.com/legal-notice/Privacy-Policy and http://aboutus.lego.com/legal-notice/terms-of-use-for-apps There’s no third-party advertising. LEGO marketing content and information is served, for instance LEGO news about LEGO sets and other LEGO games, in hope of inspiring children’s creative play. LEGO and the LEGO logo are trademarks of the LEGO Group. ©2017 The LEGO Group.

About

LEGO® Builder

This app provides interactive 3D building instructions for LEGO sets. It allows users to zoom, rotate, and view models from all angles, with step-by-step guidance. It also features a collaborative building mode for multiple users and a digital library of thousands of instruction manuals.

Highlights
  • Interactive 3D building instructions
  • Zoom, rotate, and view from all angles
  • Step-by-step digital guidance
  • Collaborative 'Build Together' mode
  • Digital library of thousands of instructions
  • Track building progress and brick count
Read full description

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.

Screenshots

LEGO® Boost4 screens
LEGO® Builder4 screens

Verdict

The call

The clearest difference is ratings volume: LEGO® Builder at 290K against LEGO® Boost's 4.3K. LEGO® Builder also leads on update cadence (every 3 weeks vs every 3 months) and review sentiment (78% vs 66%). LEGO® Boost's advantage is iOS requirement (13.0 vs 15.1). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

LEGO® Builder holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: LEGO® Builder has 290K ratings behind it against 4.3K, so its average is the more settled of the two. Written reviews point the same way: 66% of LEGO® Boost's written reviews are positive against 78% of LEGO® Builder's.

UpkeepUpdate frequency

LEGO® Boost ships an update every 3 months, LEGO® Builder every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 6 level
LEGO® Boost versus LEGO® Builder: the parameters behind the verdict, then further details
ParameterLEGO® BoostLEGO® Builder
PriceFreeFree
Rating4.6 (4.3K ratings)4.8 (290K ratings) — better
Positive reviews65.6% of reviews77.6% of reviews — better
Number of ratings4.3K290K — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank—#116 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size717 MB264 MB
Age rating4+4+
DeveloperLEGOLEGO

Customer experience

LEGO® Boost

All ratings4,262 ratings
Positive90.7%
Neutral3.0%
Negative6.3%
Written reviews392 reviews
Positive65.6%
Neutral8.4%
Negative26.0%

LEGO® Builder

All ratings288,515 ratings
Positive95.4%
Neutral2.0%
Negative2.6%
Written reviews3,811 reviews
Positive77.6%
Neutral6.2%
Negative16.2%

User reviews

LEGO® Boost

From 4.3K App Store ratings

What we love

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

Room to improve

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

LEGO® Builder

From 290K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Helpful for building sets
  • 🤖 Great 3D instructions
  • 💡 Ability to save built sets
  • 🎨 Organized by theme and year

Room to improve

  • 🐛 Crashes when using sticker steps
  • 🔍 Missing instructions for older/retired sets
  • 🔍 Incomplete set of instructions for newer sets
  • 🔍 Difficult to navigate and find specific sets
  • 🔍 Inability to add older sets to collection

Bugs and requests

LEGO® Boost

Reported bugs

5 issues
  • App crashes and freezes
  • Firmware update failures
  • Bluetooth connection problems
  • Lost progress and build instructions
  • Sensor and motor issues

Requested features

5 requests
  • More advanced programming blocks
  • Ability to save and load projects
  • Improved instructions and documentation
  • Compatibility with more devices
  • Easier part organization

LEGO® Builder

Reported bugs

4 issues
  • Sets disappearing from collection after updates
  • Inability to log in and save collection
  • Slow loading and reloading of instructions
  • Zoom and navigation issues on instructions

Requested features

5 requests
  • Add more older/retired sets
  • Improve navigation and search functionality
  • Allow adding of older sets to collection
  • Implement wishlist feature
  • Add more personalization options for profiles

In-app purchases

None

LEGO® Boost

No in-app purchases

None

LEGO® Builder

No in-app purchases

Questions

Is LEGO® Boost free?
LEGO® Boost is free to download, with no in-app purchases.
Is LEGO® Builder free?
LEGO® Builder is free to download, with no in-app purchases.
Which has better reviews, LEGO® Boost or LEGO® Builder?
LEGO® Builder is rated higher. LEGO® Boost averages 4.6 out of 5 from 4.3K ratings, while LEGO® Builder averages 4.8 from 290K ratings.
Do LEGO® Boost or LEGO® Builder have ads?
Neither LEGO® Boost nor LEGO® Builder shows ads.
Which is updated more often, LEGO® Boost or LEGO® Builder?
LEGO® Boost ships an update every 3 months, and LEGO® Builder every 3 weeks. Most recently, LEGO® Boost was updated on October 24, 2026 and LEGO® Builder on October 28, 2026.

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