React Native
React Native is an open-source framework developed by Meta (formerly Facebook) for building native mobile applications using JavaScript and React. It allows developers to create apps for iOS and Android with a single codebase, leveraging native UI components for performance and a native look-and-feel. It bridges JavaScript code to native platform APIs, enabling cross-platform development without sacrificing user experience.
Developers should learn React Native when they need to build mobile apps for both iOS and Android efficiently, as it reduces development time and cost by sharing up to 95% of code across platforms. It's ideal for startups, businesses requiring rapid prototyping, or projects where maintaining separate native codebases is impractical, such as in e-commerce, social media, or productivity apps. Its large ecosystem and community support make it a robust choice for scalable mobile development.