Creating Your First Mobile App with TypeScript


Creating a mobile app with TypeScript can be a great choice for building cross-platform applications. In this guide, we'll create a simple mobile app using React Native and TypeScript. React Native allows you to build native mobile applications for both iOS and Android using JavaScript and TypeScript.


Before you begin, make sure you have the following prerequisites installed:

  • Node.js: You can download it from
  • Expo CLI: Install it globally using npm or yarn with the following command:
    npm install -g expo-cli

Creating a React Native App

Let's create a simple mobile app using React Native and TypeScript.

Step 1: Create a New React Native App

Create a new React Native app using Expo CLI:

expo init MyApp

Follow the prompts to configure your project. You can choose the "blank" template.

Step 2: Navigate to the Project Directory

Change your current directory to the project directory:

cd MyApp

Step 3: Start the Development Server

Start the development server:

expo start

This will start the Expo development server, and you'll see a QR code in the terminal.

Step 4: Run the App on Your Mobile Device

Install the Expo Go app on your mobile device and scan the QR code to run the app on your device. You can also run it on an emulator if you prefer.

Writing TypeScript in Your App

Your React Native project is configured to use TypeScript. You can write your code in TypeScript by using the .tsx file extension. For example, you can create a file called App.tsx in your project directory and start writing TypeScript code for your app.


Creating your first mobile app with TypeScript using React Native and Expo is a great way to get started with mobile app development. You can now build, test, and run your app on both iOS and Android devices. As you become more familiar with React Native and TypeScript, you can expand your app's functionality and explore additional libraries and tools.