Instabug's Frustration-Free Sessions provides a holistic metric that assesses the overall quality of a mobile app's user experience by considering various aspects such as crash-free sessions, app hangs, launch and load times, and network performance. The tool automatically prioritizes issues based on their impact on the user experience, allowing developers to identify areas for improvement and take actionable next steps. Users can customize the calculation to adapt it to their app's specific needs, including adjusting metric impact, targets, and marking key metrics. By leveraging Frustration-Free Sessions, mobile teams can maintain industry-leading apps with mobile-focused, user-centric stability and performance monitoring.