As phrased, that strikes me as a poor question for the site.
In your case - you are asking a yes/no question.
One answer will be yes - there are apps that only run on one device.
Another answer will be no - there is no way to target apps to run on only one device.
We even entertain wrong answers - so you might get both answers to the same question and have to suss out which makes more sense to you.
In this case, what next? What problem are you actually trying to solve. It seems you are falling into the XY problem trap and not describing what you really want to do.
Basically, it reads like a "teach me everything you know about how apps are targeted to hardware" and not a "I have this specific problem that I can't solve and hope an expert would explain X to me"
The help guide has some guidance on refining the question.
What parts of that guide seem to be most likely that you could use to improve that question before asking it?