If you possess the source code of your Android application (meaning you are the developer and have the original .java or .kt files), you can undertake a "redevelopment" or "migration" project. This is the closest thing to a real conversion, but it involves manual work. According to development experts, this is "not a format conversion; it's a rewrite project". The process involves:
: Powered by Google, Flutter uses the Dart language. It allows you to use your existing Android logic and compile it directly into a native iOS IPA file.
There is if you want a quality, secure, and legitimate product on the App Store. If you are serious about bringing your Android app to iOS, focus your efforts on a professional porting project using native (Swift/Objective-C) or cross-platform (Flutter, React Native) technologies.
Converting APK to IPA can be challenging due to:
Set up your provisioning profiles and signing certificates in Xcode. An unsigned IPA cannot be installed on a non-jailbroken iOS device.