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 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 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

Our privacy policy and terms of use for apps are accepted if you download this app.
Read more on and

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.

What's New

Version 1.6.3

Bug fixes
Advanced coding blocks
Use your device Accelerator sensor
New Activities
Remix other LEGO sets
New Programming Blocks

Ratings and Reviews

4.7 out of 5
1.7K Ratings
1.7K Ratings

Our six year old enjoying

Old McRichardson

Our six year old is really enjoying the Lego Boost set and building like never before. We don’t own a tablet so he is doing Everything on an iPhone just fine and we are all the way through the cowboy stage. The way it builds in stages and expands functionality really works. Have not gotten through all the builds or programming yet but it asked for a rating. I would say I am really impressed so far. One disappointment is that I don’t see a simple intuitive help for individual programming blocks. I figure if you select a block maybe it should offer help to describe the blocks functionality.

Developer Response

The original goal was to not share the definitions of the coding blocks because we have seen that children's inquisitive nature helps them learn successfully through trial and error.

While that was our original thought we do recognize that some builders will also benefit from having so help understanding the coding blocks. Loose descriptions of the coding blocks have been added to our website to assist those kids.

You can find them at

Great toy but...


Okay, I got to admit this is a pretty darn cool toy but...When I was assembling it you start with bag one and then you open all of them because the frikin 2nd bag doesn't have all the pieces! You open one after the other and before you know it BOOM! All the bags are gone. You think it's no big deal but it is you can't find pieces very easily. So, please get this fixed and tell us at the beginning that your going to be opening ALL the bags.

Very good overall.


Overall, very good and kid intuitive. If we leave a build in the middle, sometimes have to go through other steps to get back to what build step we were on. Also, if we go forward in the build and end up in the programming section, it's tricky to get back to the building step we were on. Otherwise, very good app/toy.


LEGO System A/S
785.3 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 The LEGO Group


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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