Visual testing for mobile apps addresses the critical aspect of user interface (UI) evaluation that is often overlooked in favor of functionality testing. It ensures that mobile applications not only work correctly but also provide a seamless and visually appealing user experience across a wide range of devices, platforms, and browsers. By comparing the app's UI screenshots with reference images, visual testing identifies discrepancies and potential usability issues, which are crucial for maintaining a consistent and pleasant user experience. It complements functional testing by focusing on the app's appearance, testing individual UI components during development, and performing comprehensive end-to-end tests on the entire application. The utilization of automated visual testing tools, especially those powered by AI, enhances the accuracy and efficiency of the process, facilitating the detection of even minor visual bugs. Cloud-based platforms like LambdaTest offer scalable solutions for visual testing, supporting a variety of mobile app testing frameworks and ensuring compatibility across diverse devices and operating systems.