The only thing Genymotion basically does is use a host-native image x86 based android image, rather than the actual emulated device image, typically ARM as the android emulator would do by default (for some reason).
If you use the android emulator with the x86 android image (on a HAXM capable CPU), then it runs fine. iOS has always used a simulator.
If you use the android emulator with the x86 android image (on a HAXM capable CPU), then it runs fine. iOS has always used a simulator.