React Native is a leading cross-platform app development framework utilized by major companies like Facebook, UberEats, and Tesla to create mobile applications from a single codebase. Despite its maturity, React Native lacks the extensive toolset available for native iOS and Android app development, but it is supported by various specialized tools that enhance its development process. These tools assist in areas such as debugging, testing, UI design, and state management, contributing to improved efficiency and app quality. Key tools include BuilderX for design-to-code conversion, Bitrise and Codemagic for CI/CD automation, and Mixpanel and Countly for analytics. Other notable tools include Appodeal for ad mediation, Judopay and Square for in-app payments, and OneSignal for push notifications. While React Native offers a robust framework for app creation, its full potential is realized when combined with these supplementary tools, which address design, analytics, monetization, and user engagement needs.