Mobile and web testing both aim to ensure quality user experiences but differ significantly due to platform characteristics. Mobile testing involves checking the app’s functionality across various mobile devices and operating systems, addressing challenges like diverse screen sizes, hardware specifications, and mobile-specific functionalities like GPS and cameras. Web testing, on the other hand, focuses on ensuring a website operates effectively across different web browsers and computer systems, mainly concerning aspects like browser compatibility and network conditions. Mobile testing also considers factors such as app responsiveness and interaction with mobile-specific features, while web testing typically emphasizes aspects like page load speed and link integrity.