App testing, also known as application testing or software testing, is the process of evaluating and assessing the functionality, usability, and performance of a mobile application or website. It involves systematically examining various aspects of the application to ensure that it meets quality standards and performs as expected. The primary goal of app testing is to identify and address any issues or defects before the application is released to the end-users. This helps in delivering a reliable, user-friendly, and high-quality product that meets the needs and expectations of the target audience