Monitoring in application performance management (APM) involves tracking key performance indicators (KPIs) such as launch times, UI hangs, and network performance to identify issues and assess the app's overall quality. However, monitoring alone is not enough, as it does not provide insight into what users are experiencing. APM also includes managing several components of app performance to prevent, diagnose, and correct quality issues. The main difference between APM and application performance management lies in their approach: monitoring is a reactive strategy, while management is proactive. A mobile APM tool should track metrics such as app launch times, UI hangs, network performance, Apdex scores, and app traces, providing granular breakdowns of reported metrics with filters and changes over time. To achieve comprehensive app quality, it's essential to complement an APM tool with other app-quality products, such as bug reporting, in-app chats, crash reporting, session replay, in-app surveys, and app ratings and reviews. Instabug provides a range of tools for mobile teams to maintain industry-leading apps with user-centric stability and performance monitoring.