I think it's hard to get dev kits from nintendo, at least that's how it was the last time I checked (a few years ago), I've released on Android and it's really easy, so the only real work is porting it. I'm biased against Apple for all the fees they make devs pay, and the fact that you can't compile ios code on windows. So you have to buy or emulate a mac on top of everything else just for the privilege to give them the same 30% everyone else charges. That 30% is why I buy on itch whenever I can.
I'd do the port for free if @Davemakes was willing to give me access to the git repo(?) Although I completely understand if not for obvious reasons. This might be my wake up call to finish my own prototype 😂 Although I'll need someone who can make music as good as this!