How to Build a Simple App Using GitHub Copilot in Under 3 Hours

Building an app can feel like a daunting task, especially if you're a solo founder or indie hacker. But what if I told you that you could leverage AI to streamline the coding process? In 2026, GitHub Copilot has become a go-to tool for developers looking to speed up their workflow. With Copilot, you can build a simple app in under 3 hours. Let’s dive into how to do this, the tools you'll need, and what to expect along the way.

Prerequisites: What You Need Before You Start

Before diving into the app-building process, make sure you have the following:

1. GitHub Account: Sign up for a free account at GitHub.
2. Visual Studio Code (VS Code): Download and install VS Code, which is free and widely used.
3. GitHub Copilot Subscription: Copilot costs $10/month after a free trial. It’s essential for this guide.
4. Basic Knowledge of JavaScript: Familiarity with JavaScript will help you understand the code that Copilot generates.

Time Estimate: 3 Hours

You can finish this project in about 3 hours, assuming you have the prerequisites set up. Here's a breakdown of the phases:

• Setup (30 mins)
• Development (2 hours)
• Testing & Deployment (30 mins)

Step-by-Step Guide to Building Your App

1. Setting Up Your Environment (30 mins)

• Install VS Code: Follow the instructions on the VS Code website.
• Install GitHub Copilot: Go to the Extensions view in VS Code and search for “GitHub Copilot.” Install it and authenticate with your GitHub account.
• Create a New Repository: In GitHub, create a new repository for your app. Clone this repository to your local machine.

2. Start Coding Your App (2 hours)

Create Your Main File

1. Open VS Code and create a new file named app.js.

2. Start typing a comment describing the app functionality. For example:

   // A simple to-do list application
   

3. As you type, GitHub Copilot will suggest code. Accept the suggestions to build out your app.

Functionality to Implement

• Add Items: Write a function to add items to the to-do list.
• Remove Items: Implement a function to remove items.
• Display Items: Write a function to display the current list of items.

Example Code Snippet

Here’s an example you might get from Copilot:

let todoList = [];

function addItem(item) {
    todoList.push(item);
}

function removeItem(index) {
    todoList.splice(index, 1);
}

function displayItems() {
    todoList.forEach((item, index) => {
        console.log(`${index + 1}: ${item}`);
    });
}

3. Testing Your App (30 mins)

• Run Your App: Use Node.js to run your app. If you haven't installed Node.js, you can get it from nodejs.org.

  node app.js
  

• Check for Errors: If there are any issues, Copilot can help you debug by suggesting fixes. Just ask it by commenting on the problematic code.

4. Deployment (30 mins)

For deployment, consider using platforms like Vercel or Netlify, which offer free tiers.

• Deploying to Vercel:
  1. Sign up for a free account at Vercel.
  2. Link your GitHub repository.
  3. Follow the prompts to deploy your app.

What Could Go Wrong?

• Dependencies: If you run into issues with dependencies, ensure you have installed all necessary packages using npm.
• Code Errors: If Copilot's suggestions aren't working as expected, don’t hesitate to modify the code manually.

What’s Next?

Once you’ve built your simple app, consider the following:

• Add More Features: Think about adding user authentication or a database.
• Gather Feedback: Share your app with friends or on platforms like Indie Hackers to get feedback.
• Iterate: Use the feedback to improve and iterate on your app.

Conclusion: Start Here

Building a simple app using GitHub Copilot can be a game-changer for indie hackers and solo founders. With the right setup, you can leverage AI to speed up your development time significantly. Remember, it’s not just about building; it’s about iterating and improving based on feedback.

If you're ready to dive in, grab your GitHub Copilot subscription, set up your environment, and start coding your app today!