Mobile Vitals is a set of metrics that track fundamental health and performance indicators from mobile applications, including Android, iOS, React Native, and Flutter. These metrics help ensure a positive experience for mobile users by monitoring aspects such as slow renders, JavaScript slow renders, frozen frames, application not responding, crash-free sessions, CPU utilization, and memory utilization. By tracking these vitals, developers can gain comprehensive visibility into their mobile app performance and address any issues that may arise, ultimately improving user experience and engagement.