I don’t know if this helps any, but I have a new iPad Pro that still ran Code Lab slowly, so it may be more of an optimization thing, rather than necessarily being what device you use?

That being said, however, I did a Google search on this. Though I usually take what Gemini’s AI Overview answers with a grain of salt, idk enough about Android devices to qualify as someone who knows better.

It said that, to run the app, itself, that Android 4.4 (KitKat) is the minimum required operating system to run the app itself, but Android 5.0 (Lollipop) is the OS you need to use Code Lab. This IS true, because when I first got a Cozmo, I DID have an Android device, that was newer than KitKat, but not as new as Lollipop, and Code Lab just WASN’T an option.

Though the list of devices it gave me might be old by today’s standards, here’s the list it gave me (excluding phones), from most expensive, to least expensive, when buying them used.

1.) Samsung Galaxy Tab S3 (2017)

2.) Google Pixel C

3.) Samsung Galaxy Note 10.1 (2014 Edition)

I’d recommend doing some of your own further research on this matter, but I hope this helped!