I was referring to ability to run Android apps on IOS system. There are some related projects (Husk, UTM) but Apple essentially makes it almost impossible to use on ordinary iPhones.
Ah, true, IOS.apk rather Mac.apk. Seems Husk is building a similar compatibility layer now, whereas until now used a VM. Both approaches due to Apple's restrictions/prohibitions for Store apps need jailbreaking to use.