Users are paying more attention to how their apps perform, and higher app quality outperforms low app quality. Application performance monitoring (APM) is a key way to improve app performance and user experience by identifying performance issues such as slow screen transitions, crashes, or network issues before they affect users. APM tools allow teams to easily identify and diagnose performance problems, making it easier to fix them before they become major issues. Apdex scores are used to measure the overall user experience with an app, ranging from 0 (unacceptable) to 1 (excellent), with higher scores indicating better performance. Instabug APM provides a range of features, including customizable metrics, UI hang monitoring, and network issue detection, allowing teams to gain insights into their app's performance and make data-driven decisions to improve it. By following mobile APM best practices and using tools like Instabug, teams can proactively monitor and fix performance issues before they become major problems, resulting in a better user experience and improved app quality.