The core challenge lies in the fundamentally incompatible operating systems of Android and iOS. Applications are designed to function within the specific architecture and environment of their respective platforms. An Android application, for instance, relies on the Android Runtime (ART) and associated libraries, whereas an iPhone utilizes iOS, with its own set of frameworks and resources. This means an application compiled for Android is not directly executable on iOS, and vice versa, without significant modification or emulation.
The inability to directly utilize software across these ecosystems stems from differing core system designs. Attempting to bypass these differences presents potential security vulnerabilities and can compromise device integrity. While cross-platform development tools exist to create applications deployable on both systems, these tools function by building separate versions tailored to each platform, not by enabling a single application to operate on both without modification. There is no historical precedent for direct, unmodified operation.