Ai Coding Tools

How to Build Your First Application Using AI Tools in Just 3 Days

By BTW Team4 min read

How to Build Your First Application Using AI Tools in Just 3 Days

Ever felt overwhelmed by the idea of building your first application? You’re not alone. As indie hackers and solo founders, we often grapple with the daunting task of transforming an idea into a functioning product. The good news? With the right AI coding tools, you can build a simple application in just three days. This isn't just talk – we've done it, and I’ll walk you through exactly how to get it done.

Day 1: Ideation and Planning

Define Your Application's Purpose

Before you dive into building, clarify what your application will do. This could be anything from a simple to-do list app to a more complex data visualization tool.

  • Tip: Use a mind mapping tool like Miro to visualize your ideas. It’s free for basic use and allows for easy collaboration.

Prerequisites

  • Basic understanding of coding concepts (don’t worry, you don’t need to be an expert!)
  • Set up accounts on necessary AI coding tools (we’ll cover these soon)

Day 2: Development with AI Coding Tools

Choose Your AI Coding Tools

Here’s a list of AI coding tools that can help you build your application quickly:

| Tool Name | What It Does | Pricing | Best For | Limitations | Our Take | |------------------|-----------------------------------------------------|-----------------------------|-----------------------------|------------------------------------------------------|----------------------------------------| | OpenAI Codex | Generates code snippets based on natural language prompts | $0 for small usage, $20/mo for pro | Quick prototyping | Limited to supported languages | We use this for generating boilerplate code. | | Glitch | Collaborative platform for building apps quickly | Free tier + $8/mo for pro | Rapid development | Performance issues with larger projects | Great for quick prototypes, but not for production. | | Replit | Online coding platform with collaborative features | Free + $20/mo for pro | Learning and prototyping | Limited offline capabilities | Ideal for learning, but can be slow. | | Bubble | No-code platform for building web apps | Free + $29/mo for pro | No-code application building | Learning curve for complex features | We don’t use it because we prefer coding. | | ChatGPT | AI assistant for coding help and debugging | Free tier + $20/mo pro | Debugging and troubleshooting | Can sometimes provide incorrect suggestions | We use it to brainstorm solutions. | | GitHub Copilot | AI pair programmer that suggests code as you type | $10/mo per user | Enhancing productivity | Requires GitHub account, may not work offline | We find it invaluable for speeding up coding. |

Step-by-Step Development

  1. Set Up Your Environment: Choose a tool like Glitch or Replit and create a new project.
  2. Use OpenAI Codex: Start typing natural language prompts to generate the basic structure of your application.
  3. Iterate Quickly: Use GitHub Copilot to help write functions and handle common coding tasks.
  4. Test Your Application: Make sure to run tests as you go. Use ChatGPT to troubleshoot any issues.

Day 3: Final Touches and Deployment

Polishing Your Application

  • Add user interface elements using simple HTML/CSS. Use tools like Figma for design mockups (free for basic use).
  • Iterate on user feedback. Share your app with friends or fellow builders for quick reviews.

Deploy Your Application

  • Use Glitch or Vercel for easy deployment. Both platforms offer free tiers that work well for indie projects.

What Could Go Wrong

  • Debugging Issues: If you run into errors, use ChatGPT for help.
  • Deployment Failures: Ensure all dependencies are correctly set up before deploying.

What's Next?

Once your application is live, consider adding features based on user feedback. Use analytics tools like Google Analytics or Mixpanel to track usage and improve your app over time.

Conclusion: Start Here

Building your first application using AI tools in just three days is not only possible; it’s practical. Start by defining your app’s purpose, choose the right AI coding tools, and follow the steps outlined above.

What We Actually Use

In our experience, we rely heavily on OpenAI Codex for generating code snippets, GitHub Copilot for enhancing our coding speed, and Glitch for rapid prototyping.

If you’re ready to take the plunge, gather your ideas and get started today!

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

10 Mistakes New Developers Make When Using AI Tools

10 Mistakes New Developers Make When Using AI Tools As we dive into 2026, AI tools have transformed the coding landscape. But with all the excitement, new developers often stumble

Mar 16, 20264 min read
Ai Coding Tools

How to Use Cursor.ai for Rapid Prototyping in Under 60 Minutes

How to Use Cursor.ai for Rapid Prototyping in Under 60 Minutes In the fastpaced world of building side projects, getting an idea from concept to prototype can feel overwhelming. Ma

Mar 16, 20263 min read
Ai Coding Tools

Why GitHub Copilot is Overrated: Contrarian Perspectives on AI Coding Assistants

Why GitHub Copilot is Overrated: Contrarian Perspectives on AI Coding Assistants As a solo founder or indie hacker, you’re always on the lookout for tools that genuinely boost your

Mar 16, 20264 min read
Ai Coding Tools

How to Build Your First App Using AI Tools in Under 3 Hours

How to Build Your First App Using AI Tools in Under 3 Hours If you're a solo founder or an indie hacker, the thought of building an app might seem daunting. But what if I told you

Mar 16, 20265 min read
Ai Coding Tools

Top 5 AI Tools for Beginners in 2026: Your Launchpad

Top 5 AI Tools for Beginners in 2026: Your Launchpad As a beginner diving into the world of coding in 2026, the landscape is flooded with AI tools promising to make your journey sm

Mar 16, 20264 min read
Ai Coding Tools

Supabase vs Firebase for AI-Driven Projects: A 2026 Comparison

Supabase vs Firebase for AIDriven Projects: A 2026 Comparison As we dive into 2026, the landscape for building AIdriven applications has evolved significantly. If you're an indie h

Mar 16, 20264 min read