Question 1

Are React Native apps slow?

Accepted Answer

React Native apps are not inherently slow—when properly optimized, they deliver near-native performance for most use cases. Modern React Native applications achieve 60 FPS animations and responsive user experiences comparable to native apps, though graphics-intensive applications like 3D games or complex video editing tools may experience performance limitations compared to fully native development.

Question 2

Can React Native be used for web?

Accepted Answer

Yes, React Native can be used for web development through React Native Web, a library that makes React Native components and APIs compatible with web browsers. This approach enables developers to share 70-90% of their codebase across iOS, Android, and web platforms, significantly reducing development time and maintenance costs while maintaining consistent user experience across all platforms.

Question 3

Can React Native be used for iOS?

Accepted Answer

Yes, React Native was specifically designed for iOS development (alongside Android) and is fully supported by Facebook/Meta as a production-ready framework for building native iOS applications. React Native apps compile to genuine native iOS components, have full access to iOS APIs and features, and can be published to the Apple App Store just like apps built with Swift or Objective-C.

Question 4

Can React Native be used for desktop?

Accepted Answer

Yes, React Native can be used for desktop application development through React Native Windows and React Native macOS, official Microsoft-supported projects that extend React Native to create native desktop applications. These frameworks enable developers to build Windows and macOS desktop apps using the same React Native codebase, potentially sharing 60-80% of code with existing mobile applications.

Question 5

Can React Native build desktop apps?

Accepted Answer

Yes, React Native can build desktop applications for both Windows and macOS through dedicated frameworks—React Native Windows and React Native macOS. These official extensions allow developers to create genuine native desktop applications using React Native, sharing substantial code with mobile versions while accessing platform-specific desktop features like windowing systems, menu bars, and desktop notifications.

Question 6

Can React Native run on web?

Accepted Answer

Yes, React Native can run on web browsers through React Native Web, an accessibility-first implementation that translates React Native components into standard HTML, CSS, and JavaScript. This enables a single React Native codebase to run on iOS, Android, and web platforms, with companies like Twitter, Uber, and Flipkart using this approach to power their web applications while sharing code with mobile apps.

Question 7

Can React Native be used for Android and iOS?

Accepted Answer

Yes, React Native was specifically created for simultaneous Android and iOS development, allowing developers to build native mobile applications for both platforms using a single JavaScript/TypeScript codebase. This cross-platform approach enables teams to share 80-95% of code between iOS and Android, significantly reducing development time, costs, and maintenance overhead while delivering truly native app experiences on both platforms.

Question 8

How React Native works?

Accepted Answer

React Native works by bridging JavaScript code with native platform components through a JavaScript engine and communication layer, allowing developers to write in JavaScript while rendering true native UI elements. The framework runs JavaScript in a separate thread, communicates UI changes through a bridge (or direct interface in the new architecture), and native modules translate these instructions into platform-specific components and APIs.

Question 9

How React Native is different from React.js?

Accepted Answer

React Native is different from React.js primarily in rendering targets—React.js builds web applications that run in browsers using HTML and CSS, while React Native creates native mobile applications for iOS and Android using platform-specific UI components. Although both use React's component-based architecture and JavaScript syntax, React Native replaces DOM elements with native mobile components and uses platform-specific styling instead of CSS.

Question 10

When to use React Native?

Accepted Answer

Use React Native when you need to build mobile applications for both iOS and Android with limited budget or timeline, want to leverage existing JavaScript/React expertise, or need to maintain feature parity across platforms efficiently. React Native is ideal for business apps, e-commerce platforms, social media applications, content-driven apps, and MVPs where time-to-market and development efficiency outweigh the need for platform-specific optimizations.

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