Flutter is an open source framework developed by Google that enables the creation of high-performance, multi-platform applications with a single codebase. Datadog Mobile Real User Monitoring (RUM) supports Flutter and provides deep visibility into user experience across iOS and Android devices. RUM allows developers to gain insights into user journeys, troubleshoot errors and performance issues, and obtain multi-platform visibility for Flutter apps. By using RUM with APM traces, developers can debug the source of user performance issues regardless of where they originate in their stack.