Hello @JMdeCarton, and hi @Grace
Sorry for never posting an update on this thread! Since there was no reply, I considered it it a non-issue and then quite frankly forgot… So here’s my news, maybe it helps you your decision on which computer to get:
I did jump in at the deep end and got a Macbook Air with an Apple M1 and OS Big Sur 11.5.2 for rent, and Seamly2D has been running fine on it. From Seamly’s app info I gather that it needs Rosetta to run, but as with many other apps built for Mac computers with Intel processor, this works seamlessly (ha!).
The app crashes here and there, but to be honest I wouldn’t be able to tell whether that’s more, less, or about the same amount than on my old machine (Macbook with Intel chip). There’s usually an autosave file, so that helps with the headache.
TL;DR If you’re doubtful about a Macbook with M1 chip because of potentially losing Seamly2D, don’t be, go get it. This at least goes for the M1 2020 chips, pretty sure the newer chips also work.