I like the idea of this, but I'm struggling to think of x86 games I'd want to play with phone controls. Maybe with a gamepad?
I wouldn't want to play action games with touch controls, and most PC turn-based games use mouse input that's fairly precise and often have small text.
I've heard good things about iOS apps on Android using Cider as a compatibility layer. Like Wine, but for iOS apps. (Similar to an emulator, but it doesn't try to directly interpret the iOS code, it instead translates iOS system calls to their Android equivalents.)
I haven't looked myself, I just found it mentioned in a blog post. Searching now, it sounds like it hasn't been updated in 3+ years, so I guess it's dead?