How to Build a Simple App Using AI Tools in Just 3 Days

Ever felt overwhelmed by the thought of building an app? You’re not alone. Many indie hackers and solo founders get stuck thinking they need extensive coding skills or a massive budget to create something functional. The truth is, with the right AI tools, you can build a simple app in just three days. Yes, you read that right—three days.

In this guide, I’ll walk you through the process step-by-step, using AI tools that are accessible and affordable. Let's dive in!

Prerequisites: What You Need Before Starting

• A Computer: You’ll need a laptop or desktop with internet access.
• Basic Understanding of App Concepts: Familiarity with basic app functionality will help, but you don’t need to be a developer.
• Accounts for AI Tools: Create accounts on the tools we’ll be using—these are mostly free or have a low-cost tier.

Day 1: Concept and Design Your App

Step 1: Define Your App's Purpose

Before jumping into the tools, clarify what your app will do. Write down the core functionality. For instance, is it a simple to-do list, a weather app, or a budget tracker?

Step 2: Use AI Design Tools

Leverage AI design tools to create mockups. Here are some options:

| Tool Name | What It Does | Pricing | Best For | Limitations | Our Take | |----------------|------------------------------------------|-----------------------|---------------------------|----------------------------------|------------------------------| | Figma | Collaborative interface design | Free tier + $15/mo | UI/UX design | Limited offline capabilities | We use this for wireframes. | | Sketch | Vector graphics for UI design | $99/yr, no free tier | Mac users | Mac only | Not our go-to, but powerful. | | Canva | Drag-and-drop design tool | Free tier + $12.95/mo | Non-designers | Limited app design features | Great for simple mockups. |

Output: By the end of Day 1, you should have a basic mockup of your app.

Day 2: Development with AI Coding Tools

Step 3: Choose Your Development Tools

Next, it’s time to build your app. Here are some AI coding tools that can help streamline the process:

| Tool Name | What It Does | Pricing | Best For | Limitations | Our Take | |----------------|------------------------------------------|-----------------------|---------------------------|----------------------------------|------------------------------| | Bubble | No-code app builder | Free tier + $29/mo | MVPs and prototypes | Limited customization | We built our last MVP here. | | Adalo | No-code app development | Free tier + $50/mo | Mobile apps | Performance on larger apps | Solid choice for mobile. | | Thunkable | Drag-and-drop mobile app builder | Free tier + $25/mo | Beginners in mobile dev | Some features behind paywall | Easy to learn, fun to use. | | AppGyver | No-code platform for web and mobile apps | Free, no tiers | Full-featured apps | Steeper learning curve | Good for complex apps. |

Step 4: Set Up Your App

Follow the tool’s interface to set up your app based on your mockup. Most tools have built-in tutorials.

Expected Output: A functional prototype of your app.

Day 3: Testing and Deployment

Step 5: Test Your App

Use testing tools to ensure everything works as expected. Here are some options:

| Tool Name | What It Does | Pricing | Best For | Limitations | Our Take | |----------------|------------------------------------------|-----------------------|---------------------------|----------------------------------|------------------------------| | UserTesting | Remote user testing | Free trial + $49/mo | User feedback | Can get pricey with multiple tests| Good for understanding users. | | TestFlight | Beta testing for iOS apps | Free, no tiers | iOS apps | Apple ecosystem only | Essential for iOS testing. |

Step 6: Deploy Your App

Once testing is complete, deploy your app using platforms like:

| Tool Name | What It Does | Pricing | Best For | Limitations | Our Take | |----------------|------------------------------------------|-----------------------|---------------------------|----------------------------------|------------------------------| | Heroku | Cloud platform for app deployment | Free tier + $7/mo | Web apps | Limited to small scale | Great for quick deploys. | | Netlify | Hosting for static sites and apps | Free tier + $19/mo | Front-end apps | Backend limitations | Fast, easy setup. |

Final Output: A live app that users can access.

What Could Go Wrong

• Integration Issues: Ensure that all tools you use can integrate smoothly.
• User Feedback: Don’t ignore feedback from testers; it can guide critical adjustments.

What’s Next

After your app is live, consider how to market it. Focus on building an audience and gather user feedback to iterate and improve.

Conclusion: Start Here

Building an app in three days is entirely possible with the right tools and approach. Start by defining your app's purpose, design it using AI tools, develop it with no-code platforms, and test before deploying.

What We Actually Use: Our stack includes Figma for design, Bubble for development, and UserTesting for feedback.

Ready to build your app? Dive in and start creating!