React Native vs React.js is a common question for developers deciding how to build modern applications. Both technologies use React's component-based architecture, JavaScript, and declarative UI principles, but they target different platforms and solve different problems.

React.js is primarily used to build interactive web applications that run in browsers, while React Native helps developers build native mobile applications for Android and iOS. Understanding their differences can help you choose the right technology for your project, team, and long-term maintenance strategy.

In this guide, we will compare their rendering approaches, components, styling, performance considerations, development workflows, and practical use cases. We will also explore a runnable JavaScript example that demonstrates how both approaches can share application logic while using platform-specific interfaces.

React Native vs React.js: Architecture, Differences, and Practical Examples

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