On Android an app can do all kinds of crazy stuff without permission like draw over other apps; I assume some of that could be useful for tracking On iOS thoug

On Android an app can do all kinds of crazy stuff without permission like draw over other apps; I assume some of that could be useful for tracking On iOS though you can't do that stuff, and I would tend to think apps are more sandboxed than websites (no cookies, for one). I don't know for sure though; I'd love to hear more from someone who has more firsthand experience.