TLDR: I think you should just wait until Apple finishes Marzipan. Currently only Apple has a few demo apps with this technology (Voice Memos, Apple News, Home, etc.), but we expect them to introduce it to the public this summer. This will help developers bringing macOS version of their iOS apps with a very little effort. Best GBA Emulator For Pc To Play All GBA Games With.
On the other hand, Apple's current strategy is to bring an iOS compatibility layer (codenamed 'Marzipan') to macOS. Play All the unblocked retro games online in your browser with your PC Mac or Android IOS devices. Massive work needed for a short period of success. No App Store or iOS updates would work anyway. If somebody would do that, Apple would certainly ruin it by modifying iOS further. It's borderline impossible to create a software which has every hardware ID emulated to run and act as a real iPhone. It needs apps built for Intel x86 instead of the ARM CPU found in iPhones. iPhone Simulator from Xcode is not an emulator, it is only simulating the software environment of the iPhone, not the hardware itself.
