I'm currently running macOS 10.14 Mojave and I see this warning when I start the EV3 programming software:
Will it stop working if I upgrade to Catalina?
Is there an alternative?
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I just updated to Catalina Beta 10.15 and as expected, the software no longer starts.
The same happens with both the Home and the Education version.
If you are an existing EV3 Desktop software user and depend on being able to use existing programs or curriculum, it is highly recommended to either not upgrade macOS or to install a macOS or Windows virtual machine, such as Virtual Box, on your Mac to run the old version of the LEGO EV3 desktop software. There is no direct replacement for this software and no way to automatically convert programs to any of the new software alternatives.
At the end of November 2019, LEGO released a macOS version (English only) of their new programming software based on the Scratch programming language. This software is good for basic programming, but lacks advanced features like data logging, file access, brick-to-brick Bluetooth messaging, and 3rd party sensor support. Home. Education.
For users needing advanced features, the LEGO Education MicroPython for EV3 is the recommended solution. Download.
Info below is kept for historic record.
Updated LEGO announcement (September 2019)
LEGO has made an announcement about a replacement software.
The current version of the EV3 Lab software is not compatible with the upcoming release of Apple’s operating system for Mac computers, called ‘Catalina’. We have therefore decided to replace the current EV3 Lab software and EV3 Programming App with a completely new app, called LEGO® MINDSTORMS® Education EV3 Classroom. Featuring a coding language based on Scratch, EV3 Classroom will initially launch for macOS in November 2019 and in spring 2020 for iOS, Windows 10, Android and Chrome. EV3 Classroom will offer a consistent experience, features, and content across all devices. The first release of EV3 Classroom will be in US English, followed by the other 15 EV3 languages in spring 2020.
To continue to enjoy an uninterrupted EV3 experience, we recommend that you upgrade to the new EV3 Classroom app before updating to the new OS version. For further questions and support, you can to reach out to Technical Consumer Service at https://education.LEGO.com/en-us/support.
Original LEGO Education announcement (June 2019)
The LEGO Education website says:
Attention Mac Users: This Software will not work with future versions of MacOS. We are aware of this and we are looking into a solution.
In the meantime you could use the early release of the new version, made available for the home edition of the EV3.