You will see recommendations for "iEMU" or "iPhone Box" or "iOS on Android". These are all fake. They either show a slideshow of screenshots or ask you to complete surveys that never unlock the "emulator." Do not waste your time.
No true iOS emulator exists as a simple APK file. iOS is proprietary, closed-source, and designed to run only on Apple hardware. What you’ll actually find in these “emulator” apps is almost always: iphone 5 ios 7 emulator v2 apk
If you are a developer, you can use tools like Corellium (a legitimate virtualization tool), though it is enterprise-level software and usually paid/subscription-based. This creates a virtual iPhone environment, but it is not a simple "install and play" APK for the average user. You will see recommendations for "iEMU" or "iPhone
These are Android applications that replace your home screen, app drawer, and icons with an iOS-like skin. A "v2" version might claim to have: Limitations: These do not emulate iOS apps
Limitations: These do not emulate iOS apps. You cannot run iMessage, Safari’s Nitro engine, or Apple Maps. They are superficial themes.