: An APK is already compiled for Android's architecture. Converting it to iOS would require "de-compiling" the app back to source code, translating that code to a new language, and re-compiling it for Apple's strict requirements. Security and Licensing
For less than $50, you can buy a used Android phone or tablet. Use it exclusively for the apps that aren’t on iOS. Then, use a Bluetooth keyboard/mouse or remote control app to switch between devices. This is far more practical than any “converter.”
While you cannot "convert" a file, you can achieve the same result through these real methods: Cross-Platform Recompilation : If the original app was built using a framework like React Native