Of course. Apple already has had emulators for iOS for years, it's how most devs do mobile development. I use an iPhone and iPad emulator at work to occasionally run our app to test it, it's way nicer than running on an actual iPhone or iPad (I don't have either anyway).
Apple already has had emulators for iOS for years, it's how most devs do mobile development.
AFAIK Apple does not release an iPhone emulator to the public. There is one third party emulator I’m aware of but that’s mainly intended for security research and not general development.
it's way nicer than running on an actual iPhone or iPad (I don't have either anyway).
Yes, that’s what I mean. It’s a simulator, not an emulator. It does not work exactly like a real device. For simple stuff, sure, but if you dive below the surface even a little it’s very different.
One example is anything to do with the GPU / Metal. It has a very different set of capabilities and limitations than actual iOS hardware.
Also for anything UI related. You want to test how it actually feels to use, e.g. if you can reach the UI elements with one hand. Using it with a mouse on a monitor just doesn’t give you a good sense of that. Especially if your UI involves gestures.
Probably. Go to developer.apple.com. You want to download Xcode and install the iOS SDK through XCode. You may need to make (free tier) Apple Developer Account before it lets you download.
Note that you can’t install apps from the iOS App Store on the iOS simulator; only a handful of system apps and anything you build for the simulator yourself.
An Android rom that emulate the iPhone? It would emulate Android and in either constellation your comment does not make any sense. No one assumed Apple to emulate Android OS.