The term "quality of apps" refers to the overall level or standard of applications, specifically in relation to their usability, functionality and performance. It is an assessment of how well-made a particular app is, taking into account factors such as its design, user experience, reliability, security, and compatibility with different devices and operating systems. The quality of apps can vary greatly depending on the developer's attention to detail, programming skills, and adherence to industry standards and best practices. A high-quality app will provide a smooth, enjoyable and efficient user experience while meeting the needs and expectations of its users.