The advancement of educational technology has shifted the focus toward cross-platform mobile and web applications that enable real-time interactivity and personalized learning. React, a popular JavaScript framework, and Firebase, Google’s cloud-based platform, are increasingly employed to build responsive and dynamic educational applications. This review explores the integration of React and Firebase in developing cross-platform educational apps with real-time feedback mechanisms. The paper discusses architectural patterns, real-time communication models, development challenges, and successful implementations. It also identifies future opportunities in AI-driven learning, accessibility, and collaborative technologies. The insights offered in this article provide developers and educational technologists with a foundation for creating more effective digital learning experiences.