How to Build and Debug Your First App Using AI Tools in 90 Minutes

If you're a beginner wanting to dive into app development, the prospect can feel overwhelming. You might think, "I don’t know how to code," or "What if I mess it up?" But here's the good news: in 2026, AI tools have made it easier than ever to build and debug your first app, even in a tight 90-minute window. The truth is, you don't have to be a programming whiz to get started, and I’m here to guide you through the process with practical steps and tools that actually work.

Prerequisites: What You Need to Get Started

Before we dive in, let’s set you up for success. Here’s what you’ll need:

1. Basic understanding of programming concepts: You don’t need to be an expert, but knowing what variables and functions are will help.
2. A computer with internet access: This is where you’ll build your app.
3. An AI coding tool: We’ll cover several options below.
4. An app idea: Keep it simple; think of a to-do list app or a basic calculator.

Step 1: Choose Your AI Tool

There are a plethora of AI coding tools available that can help you build your app quickly. Here’s a comparison table of some of the best options as of May 2026:

| Tool Name | Pricing | Best For | Limitations | Our Take | |-------------------|--------------------------|-----------------------------------|---------------------------------------|---------------------------------| | ChatGPT | Free / $20/mo pro | Conversational apps, chatbots | Limited to text-based applications | We use this for generating code snippets. | | Codeium | Free, $19/month pro | Code suggestions & completions | Less effective for complex logic | Great for quick code suggestions. | | Replit | Free, $10/mo for teams | Collaborative coding | Limited features on the free plan | Ideal for team projects. | | GitHub Copilot| $10/month | General coding assistance | Can produce incorrect code | Works well for various languages. | | Bubble | Free tier + $29/mo pro | No-code app building | Limited customization for complex apps | Great for visual learners. | | FlutterFlow | Free tier + $25/mo pro | Mobile app development | Can be complex for beginners | Useful for mobile-first projects.| | AppGyver | Free | Web and mobile app development | Limited integrations | Best for no-code enthusiasts. | | Thunkable | Free tier + $25/mo pro | Cross-platform app development | Limited design flexibility | Good for simple apps. | | Adalo | Free tier + $50/mo pro | Quick web and mobile apps | Can get pricey with advanced features | Easy to use for MVPs. | | OutSystems | Free tier + $100/mo pro | Enterprise-level apps | Complexity can be overwhelming | Best for larger projects. |

Step 2: Build Your App in 30 Minutes

Now that you've chosen your AI tool, let’s get building. Here’s a simple workflow to create a basic to-do list app using Bubble as an example:

1. Sign Up for a free account on Bubble.
2. Create a New Project: Name it "My First To-Do App".
3. Design the Interface:
   • Drag and drop elements: Add a text input for the task, a button to add the task, and a repeating group to display tasks.
4. Set Up the Workflow:
   • Click on the button, and set up a workflow to add tasks to the repeating group when clicked.
5. Preview Your App: Use the preview function to see your app in action.

Expected output: A functional to-do list where you can add and display tasks.

Step 3: Debugging Your App in 30 Minutes

Now that we’ve built something, it's time to debug. Here’s how to tackle common issues:

1. Check for Errors: Use the debugging tools in your chosen platform to identify errors. For Bubble, use the "Debug Mode" to see what happens when you interact with elements.
2. Test All Functions: Click through your app thoroughly. Make sure adding, deleting, and displaying tasks works as expected.
3. Use AI Assistance: If you hit a snag, use ChatGPT to ask specific questions about your code or workflow. For example, "Why isn't my button adding tasks in Bubble?"
4. Iterate Based on Feedback: Make adjustments based on what you find during testing.

Common Problems and Solutions

• Problem: Button doesn’t work.

  • Solution: Check if the workflow is set up correctly.

• Problem: Tasks don’t appear in the repeating group.

  • Solution: Ensure the data source is set up properly.

What’s Next?

Congratulations on building your first app! Here’s how you can continue your journey:

1. Enhance Your App: Add more features, like deadlines or categories.
2. Learn More: Explore tutorials on platforms like YouTube or Udemy to deepen your understanding.
3. Join Communities: Engage with fellow builders on forums like Indie Hackers or subreddits related to app development.

Conclusion: Start Here

Building and debugging your first app in 90 minutes is not just possible; it’s practical with the right tools. Start with a simple idea and use the AI tools discussed to guide you through the process. Remember, it’s all about iterating and learning as you go.

What We Actually Use: For our projects, we typically lean on Bubble for no-code apps and ChatGPT for coding assistance. Both have proven invaluable for rapid development and debugging.