Create intelligent remote-control robots and vehicles using interactive in-app building instructions, with the LEGO® MINDSTORMS® Robot Inventor App! For use with the LEGO MINDSTORMS Robot Inventor (51515) set launched in 2020, this companion app has everything you need to build Charlie, Tricky, Blast, M.V.P. and Gelo, each with their own unique abilities. Then get ready to code and play your way through 50+ challenging activities.

A fun build-and-play experience

As you construct each robotic toy using the step-by-step building instructions in the app, you’ll complete a series of fun coding activities along the way. But if you prefer, you can also download a PDF version.

Coding, the fun way

If you’ve ever used a visual coding environment, you’ll be right at home with the Robot Inventor App’s colorful drag-and-drop canvas based on Scratch. Each coding element is grouped into categories, so you can quickly find what you’re looking for. As well as using the coding canvas to complete the 50+ activities included in the app, you can also code your own activities for an even greater challenge – or, if you’re a more advanced coder, you can also use Python.

Take control

The Robot Inventor App includes a remote-control feature so you can get your robot walking, dancing and firing with just a few taps! You can also customize it to create your own personalized controller.

Learn while you play

While you’re building, coding and playing with your robots, you’ll also be exploring, experimenting and learning. Learning while you play – imagine that!

Same app, different devices

Robot Inventor is available for iOS and macOS devices. This means that you can save your project on one device, share it to another and reopen it to carry on right where you left off.

Share your cool creation

If you’ve designed and built your own amazing robot, you can take a photo of it and upload it to LEGO Life for everyone to see. You can also get loads more inspiration from what others have created.

Key Features:

Intuitive, drag-and-drop coding interface based on Scratch

Text-based Python coding for more advanced users

50+ activities

Bluetooth connectivity for wireless communication

Remote control for instant action

Fun and challenging activities for beginners and more advanced users

Consistent experience across iOS and macOS

Digital building instructions included in the app

Kids gain STEM skills through playful learning


This is not a stand-alone app. It’s used to build and code interactive LEGO robot toys included with the LEGO MINDSTORMS Robot Inventor (51515) set.

To check whether your device is compatible with the Robot Inventor 51515 set and Robot Inventor App, visit


For more information about LEGO MINDSTORMS Robot Inventor, visit There’s also lots more for kids at

For app support, contact LEGO Consumer Service at

LEGO, the LEGO logo, the Minifigure, MINDSTORMS and the MINDSTORMS logo are trademarks and/or copyrights of the LEGO Group. © 2020 The LEGO Group. All rights reserved.

What’s New

Version 1.0.3

Maintenance Update

Ratings and Reviews

4.3 out of 5
6 Ratings

6 Ratings

braden wahrenburg ,

Wow so helpful

I love the coding grid and how you can build different segments

jessiezap ,


The app is unusable and has made for an unbelievably disappointing Christmas gift. My kid is crushed this doesn’t work. It crashes every time we try to connect the hub and constantly says it needs an update despite doing it 4 times already.

Developer Response ,

Hi there. We're sorry you're having trouble keeping the hub connected. Have you tried connecting the hub directly with the USB cable? 🔌 Simply plug in the hub to your computer via the USB cable and you'll automatically connect. You can also try uninstalling and reinstalling the app to your device. If you continue having issues with the connection, reach out to us directly at 📞🙂 We're always here to help!
-Heather, LEGO® Customer Service

matteo6751 ,

Big Fail by LEGO

The app is a mess! We’ve tried on 4 different devices to get this to work. It either won’t stay connected or crashes while updating firmware. It’s probably getting returned. Don’t make the same $360 mistake Santa did!

Developer Response ,

We're sorry you're having trouble with the LEGO® Mindstorms® app. 🤔 Have you double-checked that your device meets all the specs listed at 📲 If your device is on the list, but it's still not working, give us a shout at 📞😊 We're always here to help! ✨
- Heather, LEGO® Customer Service

App Privacy

The developer, LEGO, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


LEGO System A/S
156.5 MB

macOS 10.14 or later. Requires iOS 13.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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