Not really?
I usually use my personal computer, or my notebook, since those were always more cheaper than getting an iPhone or iPad.
I don't know from where you are from, but making a decent computer out of outdated spared parts is extremely cheap, especially getting a netbook if a notebook is a bit too big for you, while also it is still portable. The thing is, that on my personal experience any mobile device is more likely to break or burn than a personal computer, depending of course in the amount of work you give to it. I work on a big canvas with several files constantly, so even my current Samsung Tablet needs to be emptied every month otherwise the files would make the whole system lag.
As well that... I believe engaging with fellow creators is something that can easily be done through here or the Discord Server, which, Discord is in fact an app. And if the problem is a certain community, then maybe you can try a different one, you can create your own server and curate it with your own set of rules and channels. It's no easy work and most of the time those servers end up desert, but its something that can be tried.
While I think it would be good to implement for those that usually work on phone or iPads/tablets... I can just imagine how buggy it'll be on the first years, or how the app may work normally but other aspects end up worse (Like the forum still having a few issues after it's latest update and such)