React Native: Complete Guide to Building Android and iOS Apps with JavaScript

# React Native: Complete Guide to Building Android and iOS Apps with JavaScript

React Native is one of the most widely used frameworks for cross-platform mobile development. It enables developers to build applications for both **Android** and **iOS** using a shared codebase written in JavaScript, while still delivering performance close to native applications.

This approach has significantly reduced development time and cost, making it a preferred choice for startups and large tech companies. If you're also considering Flutter — another leading cross-platform framework — our comparison section below will help you decide.

"The biggest mistake we made as a company was betting too much on HTML instead of native."

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— Mark Zuckerberg, Meta (2012)

In 2012, Mark Zuckerberg stated that relying heavily on web technologies in mobile apps was a major strategic mistake. Early Facebook mobile apps were built using HTML5, which led to performance issues and a poor user experience. This pushed the company toward native-based solutions and eventually inspired the development of React Native.

What is React Native?

React Native is an open-source framework created by Meta that uses the React library to build user interfaces. Unlike traditional web development, it renders **native UI components instead of HTML elements**, enabling truly mobile-native experiences.