React vs React Native: What's the Difference, and Which Do You Need?

The names are confusingly close, and the confusion is expensive when it ends up in a job post or a project brief. "We need a React developer for our iPhone app" and "our React Native developer can build the website, right?" are both half true.

Here's the short version: React is a library for building user interfaces, used mostly for websites and web apps. React Native uses React to build real mobile apps for iOS and Android. They share a way of thinking and a lot of code patterns, but they render to different places, use different building blocks and ship in completely different ways.

Key takeaways

• React builds web interfaces that run in a browser and render to HTML.
• React Native builds mobile apps that render to real iOS and Android components, and can also target the web.
• They share components, JSX, hooks, state management, TypeScript and much of the business logic.
• They differ in the building blocks (div vs View), styling, navigation, device APIs, testing and releases through app stores.
• A React developer can learn React Native quickly, but mobile adds its own skills: store releases, native modules, offline behaviour and performance on real devices.

React Native vs React: the difference in one table

The same idea in both

Here's a tiny "like" button in each. Notice how the logic is identical and only the building blocks change.

React (web):

import { useState } from "react";

export function LikeButton() {
  const [likes, setLikes] = useState(0);
  return (
    <button onClick={() => setLikes(likes + 1)} className="like">
      ♥ {likes}
    </button>
  );
}

React Native (mobile):

import { useState } from "react";
import { Pressable, Text, StyleSheet } from "react-native";

export function LikeButton() {
  const [likes, setLikes] = useState(0);
  return (
    <Pressable onPress={() => setLikes(likes + 1)} style={styles.like}>
      <Text>♥ {likes}</Text>
    </Pressable>
  );
}

const styles = StyleSheet.create({
  like: { padding: 12, borderRadius: 8, backgroundColor: "#f1f1f1" },
});

The state (useState), the event handling and the component structure are the same. button becomes Pressable, text must live inside Text, and CSS becomes a style object.

What carries over from React to React Native

• Components, props, state and hooks.
• State management (Zustand, Redux Toolkit, TanStack Query).
• TypeScript, API clients, validation (for example Zod) and business logic.
• Testing habits with Jest and Testing Library.
• Most of your mental model of how a React app is structured.

What's genuinely new on mobile

• Navigation that feels native: stacks, tabs, modals and swipe-back gestures instead of URLs.
• Device features: permissions, camera, location, notifications, Bluetooth.
• Offline and flaky networks: phones lose signal constantly, so caching and retries matter more.
• Performance on real devices: long lists, images and startup time on mid-range Android phones.
• Releases: signing, builds, store review, phased rollouts and over-the-air updates.
• Native code, occasionally: a module in Swift or Kotlin when JavaScript alone can't do something.

From the field: I work across both, with React and Next.js on the web and React Native and Expo on mobile, and the release path is the biggest difference in day-to-day work. Shipping a website is a deploy. Shipping an app is builds, signing, store review and staged rollouts, which is why I treat release ownership as part of the job.

Mistakes React developers make on their first React Native app

These come up again and again when web developers move to mobile:

• Reaching for web libraries. Anything that touches the DOM (charting libraries, rich-text editors, many UI kits) won't work in React Native. Check for a React Native version first.
• Assuming CSS. There's no cascade, no grid, no hover and only a subset of Flexbox defaults (columns are the default direction). Style each component explicitly.
• Testing only on an iPhone simulator. A mid-range Android phone is often the real performance test, and many of your users will have one.
• Ignoring the keyboard and safe areas. Inputs hidden behind the keyboard and content under the notch are classic first-app bugs.
• Expecting instant deploys. A store release takes a review cycle. Over-the-air updates help for JavaScript fixes, but native changes still go through the stores.
• Forgetting offline. On the web, a lost connection is rare. On a phone, it's daily.

None of these is hard to fix once you know about it, which is why a short mobile-specific checklist pays off for any team making the move.

Can one codebase do both?

Partly, and sometimes fully.

• Share logic, not screens: many teams keep a Next.js website and a React Native app, sharing types, API clients and business rules in a shared package.
• Share screens too: with React Native for Web (built into Expo), one codebase can target iOS, Android and the web. It works best for app-like web experiences rather than content sites that live on search traffic.

Which is easier to learn?

React first. React Native assumes you know React's components, props, state and hooks, then adds mobile concepts: native components instead of HTML elements, styling without CSS files, navigation stacks, device permissions and app store releases. A React developer can build simple React Native screens in days; shipping a production app takes longer, mostly because of the mobile-specific parts listed above.

Performance: web React vs React Native

They aren't competing for the same job. React on the web renders HTML in a browser; React Native renders native platform views, with JavaScript running in Hermes. A well-built React Native app feels like a native app in ways a mobile website can't, such as gestures, smooth native transitions and offline use, while a website wins on reach, instant access and search. Pick by where your users are, not by benchmark.

Which do you need?

When hiring, say which one you need. A strong React web developer can become productive in React Native, but they'll need time with the mobile-specific parts above, especially releases.

FAQ

Is React Native the same as React?

No. React is a library for building user interfaces, mostly on the web. React Native is a framework that uses React to build native mobile apps. They share the same component model and hooks, but React Native renders native views instead of HTML and ships through app stores.

Can React Native be used for iOS?

Yes. React Native builds real iOS apps and Android apps from the same codebase, rendering native iOS components on iPhones and iPads. You'll still need a Mac with Xcode, or a cloud build service like EAS Build, to produce the iOS app.

Should I learn React or React Native first?

If you're new to both, learning React first is usually easier, because the web has simpler tooling and instant feedback. React Native then feels like React with different building blocks plus mobile-specific skills. If your goal is purely mobile apps, starting with React Native and Expo works well too.

Can a React developer build a React Native app?

Yes, a React developer can become productive in React Native quickly, because components, state and hooks are the same. The learning curve is in mobile-specific areas: navigation, device permissions, offline behaviour, performance on real devices and the App Store and Google Play release process.

Next steps

If you're not sure whether your project needs React, React Native or both, send me a description and I'll tell you what I'd build and why. Get in touch, or see how I work as a React Native developer.

Sources

• React documentation, React
• Core components and native components, React Native docs
• Developing for the web with Expo, Expo
• NativeWind, NativeWind