Ai Coding Tools

How to Create a Simple Web App Using AI Coding Tools in 3 Days

By BTW Team4 min read

How to Create a Simple Web App Using AI Coding Tools in 3 Days

Building a web app can feel like an insurmountable task, especially when you're racing against the clock. But what if I told you that you could create a functional web app in just three days using AI coding tools? As indie hackers and solo founders, we often struggle with limited resources and time constraints. In this guide, I'll walk you through how to leverage AI coding tools to build your next project quickly and efficiently.

Day 1: Planning and Setting Up Your Project

Define Your App's Purpose

Before jumping into coding, spend time defining what your web app will do. Will it be a simple task manager, a blog platform, or an e-commerce site? Keep it simple for your first iteration. Remember, you can always add features later.

Choose Your Tech Stack

For this project, we recommend the following AI coding tools:

| Tool | Pricing | Best For | Limitations | Our Take | |-------------------|-----------------------------|-----------------------------|------------------------------------------|--------------------------------------| | OpenAI Codex | $20/mo | Code generation | Limited to supported languages | We use this for quick code snippets | | Replit | Free tier + $7/mo pro | Collaborative coding | Free tier has limited resources | Great for team collaboration | | GitHub Copilot | $10/mo | Code suggestions | Requires a GitHub account | We love it for autocomplete | | Bubble | Free tier + $29/mo | No-code apps | Can get complex for bigger projects | We don't use it for full coding | | Vercel | Free tier + $20/mo pro | Hosting | Limited server resources on free tier | Good for deploying apps quickly | | Postman | Free tier + $12/mo pro | API testing | Free tier has limited features | Essential for API integrations | | Figma | Free tier + $15/mo pro | UI/UX design | Limited features in free tier | We design wireframes here | | Zapier | Free tier + $19.99/mo | Automation | Limited integrations on free tier | We automate workflows with it | | Airtable | Free tier + $10/mo pro | Database management | Limited records in free tier | Good for managing data easily | | Algolia | Free tier + $35/mo | Search functionality | Costs can escalate with usage | We use it for search features |

Set Up Your Development Environment

  1. Create accounts for the tools listed above.
  2. Set up a new project in your chosen IDE (like Replit or your local setup).
  3. Install necessary packages using the AI coding tools for your tech stack.

Day 2: Building the Core Features

Code the Frontend

Using a combination of Figma for design and your coding tool (like OpenAI Codex or GitHub Copilot), start building out the user interface. Focus on:

  • Layout: Use Flexbox or Grid for responsive design.
  • Components: Build reusable components for buttons, forms, and navigation.

Develop the Backend

  1. Set up your database in Airtable or an alternative.
  2. Create your API using Postman to handle requests and responses.
  3. Connect the frontend and backend. Use Fetch API or Axios for API calls.

Test Your App

  • Use Postman to send requests and check responses.
  • Ensure your UI is responsive and works on different devices.

Day 3: Testing, Deployment, and Launch

Final Testing

  • Conduct thorough testing of all features.
  • Use tools like Vercel for deployment and check for any issues.

Deployment

  1. Deploy your app using Vercel or another hosting service.
  2. Set up your domain if you want a custom URL.

Launch

  • Share your app with a small group of users for feedback.
  • Use this feedback to make quick iterations.

What Could Go Wrong

  • API issues: Ensure your endpoints are correctly set up and accessible.
  • Design bugs: Always check responsiveness on multiple devices.
  • Deployment errors: Double-check your environment variables and build settings.

What's Next

Once your app is live, consider adding features based on user feedback. Explore integrating analytics tools to track usage, and keep iterating.

Conclusion: Start Here

Creating a web app in three days is entirely feasible with the right tools and a focused approach. Start by defining your purpose and choosing your tech stack wisely. Use the resources outlined above to streamline your process.

If you’re unsure where to begin, I recommend starting with OpenAI Codex for code generation and Vercel for deployment.

Follow Our Building Journey

Weekly podcast episodes on tools we're testing, products we're shipping, and lessons from building in public.

Subscribe

Never miss an episode

Subscribe to Built This Week for weekly insights on AI tools, product building, and startup lessons from Ryz Labs.

Subscribe
Ai Coding Tools

How to Create Your First Web App Using AI Coding Tools in Just 2 Hours

How to Create Your First Web App Using AI Coding Tools in Just 2 Hours Building your first web app can feel like a daunting task, especially if you don’t have a coding background.

May 6, 20265 min read
Ai Coding Tools

How to Optimize Your Coding Process with AI Tools in Just 30 Minutes

How to Optimize Your Coding Process with AI Tools in Just 30 Minutes As indie hackers and solo founders, we often find ourselves wearing multiple hats, and coding can feel like the

May 6, 20264 min read
Ai Coding Tools

How to Set Up GitHub Copilot for Your Development Workflow in 30 Minutes

How to Set Up GitHub Copilot for Your Development Workflow in 30 Minutes If you’re a solo founder or indie hacker, you're probably juggling multiple roles—developer, marketer, and

May 6, 20264 min read
Ai Coding Tools

How to Maximize Productivity with AI Coding Tools in Just 30 Minutes

How to Maximize Productivity with AI Coding Tools in Just 30 Minutes In 2026, the landscape of coding has shifted dramatically with the rise of AI coding tools. If you’re an indie

May 6, 20264 min read
Ai Coding Tools

Supabase vs Firebase: Which AI Coding Platform is Best for Your Project in 2026?

Supabase vs Firebase: Which AI Coding Platform is Best for Your Project in 2026? As indie hackers and solo founders, we often find ourselves at a crossroads when choosing the right

May 6, 20263 min read
Ai Coding Tools

Comparison of GitHub Copilot vs Cursor: Which AI Coding Tool Is Right for You?

Comparison of GitHub Copilot vs Cursor: Which AI Coding Tool Is Right for You? As a solo founder or indie hacker, you’re likely juggling multiple tasks, and coding efficiently can

May 6, 20264 min read