Apps rely on "system calls" for things like using the camera or GPS. An Android system call for "open camera" doesn't mean anything to an iPhone.
Instead of converting the file, most online tools offer one of these three things: Convert Apk A Ipa Online
Here is the technical breakdown of why a direct converter is a myth, and what your actual options are. Apps rely on "system calls" for things like
(Cross-platform managers)
There is no such thing as a legitimate "online converter" for turning an Android APK into an iOS IPA. Because these two file types are built for completely different operating systems—Android (Java/Kotlin) and iOS (Swift/Objective-C)—they cannot simply be reformatted like a video or audio file. (Cross-platform managers) There is no such thing as
Can You REALLY Install APK Files on iPhone? Methods EXPOSED!
can sometimes run Android apps on iOS by creating a virtual environment, but this is an emulation, not a true file conversion. If You Just Want to Use an App Before looking for a converter, check the Apple App Store