How Do I Create a React Native Mobile App?

Denise Wilkinson

If you’re looking to create a mobile app with React Native, you’re in the right place. React Native is a powerful and popular framework that allows developers to create high-performance mobile apps for both iOS and Android platforms using JavaScript.

Before we dive into the technical details of creating a React Native app, it’s important to understand what React Native is and why it’s so popular.

React Native is an open-source JavaScript framework created by Facebook. It allows developers to build mobile apps using the same principles as React, a popular web development framework. This means that developers can use their existing knowledge of HTML, CSS, and JavaScript to create native mobile apps for iOS and Android platforms.

Now let’s get started with creating your own React Native app.

Step 1: Install Node.js

The first step in creating a React Native app is to install Node.js on your computer. Node.js is a cross-platform JavaScript runtime environment that allows developers to run JavaScript on the server-side.

You can download and install Node.js from their official website ( Once installed, you can check if it’s working properly by opening your command prompt or terminal and typing `node -v`. This should display the version of Node.js you just installed.

Step 2: Install Expo CLI

Expo CLI is a command-line interface tool that makes it easy to start, develop, and build React Native apps. You can install it globally using npm (Node Package Manager) by running the following command in your command prompt or terminal:

npm install -g expo-cli

Once installed, you can check if it’s working properly by typing `expo –version` in your command prompt or terminal. This should display the version of Expo CLI you just installed.

Step 3: Create a new project

Now that we have all the necessary tools installed, we can create a new React Native project using Expo CLI. Open your command prompt or terminal and navigate to the directory where you want to create your project.

Then, run the following command to create a new blank project:

expo init my-app

This will create a new directory called `my-app` and initialize it with the necessary files and dependencies to start building your app.

Step 4: Run your project

Now that you have created your React Native project, it’s time to run it. Navigate into your project directory using the command prompt or terminal and run the following command:

npm start

This will start the development server for your app and open a new browser tab showing the Expo Developer Tools. From here, you can preview your app on an iOS or Android simulator, or scan the QR code with your phone to preview it on your device.

Step 5: Write code

With all of the setup out of the way, it’s time to start writing some code! React Native uses JSX syntax, which allows developers to write HTML-like code inside their JavaScript files.

You can edit the `App.js` file inside your project directory to start building your app. Try adding some text and images to see how they render in real-time on both iOS and Android platforms.


In this tutorial, we covered how to create a React Native mobile app from scratch using Expo CLI. We started by installing Node.js and Expo CLI before creating a new project and running it on both iOS and Android platforms.

Remember that this is just the beginning of building a mobile app with React Native. There are many more features and libraries available that can help you take your app to the next level. Keep exploring and experimenting with different components until you find what works best for you!