Building user interfaces for mobile apps is a significant undertaking. Imagine meticulously crafting a sleek, functional UI for your Android app, only to realize you need to recreate it from scratch for iOS. This duplication of effort is a common pain point in mobile development, consuming valuable time and resources. But what if you could magically reuse your Android UI code on iOS? Researchers have introduced a groundbreaking automated tool called GUIMIGRATOR that translates Android UI code into its iOS SwiftUI equivalent. This innovative approach sidesteps the common issues of image recognition errors in automated UI generation by directly converting existing UI elements. GUIMIGRATOR starts by extracting and parsing the Android UI layouts, views, and resources, creating a structural representation called a 'UI skeleton tree.' This tree is then transformed into an Android UI model. Leveraging a set of predefined translation rules, GUIMIGRATOR converts this model into a corresponding SwiftUI model. Finally, using target code templates, it generates the final iOS UI code, which can then be compiled and validated in Xcode. Testing GUIMIGRATOR on 31 open-source Android apps revealed impressive results. The tool achieved a UI similarity score of 78% between the original and migrated UIs—a substantial improvement over existing large language model (LLM) approaches. This level of accuracy is achieved by carefully simulating the UI effects of Android components using SwiftUI counterparts. Even complex layouts are handled effectively through intelligent combinations of SwiftUI's stack views (ZStack, VStack, HStack). Moreover, GUIMIGRATOR is incredibly efficient, taking just 7.6 seconds to process the entire dataset. This speed advantage over LLMs, often hindered by network latency and token costs, underscores its practical value. Challenges remain, particularly in translating third-party UI components not readily available in iOS. GUIMIGRATOR handles these by using placeholder components and providing detailed reports to guide developers in manual adjustments. The potential of automated UI migration is vast. While GUIMIGRATOR represents a major leap, future research aims to achieve bidirectional migration between various platforms and languages. Imagine a future where UI design transcends platform boundaries—a future where GUIMIGRATOR and similar tools pave the way for seamless cross-platform development.