Learn how to create apps without writing code. This guide shows you how to build a playful cat image generator using Replit’s AI tools.

What you’ll learn

AI Development

Create apps through natural language conversations

No-Code Building

Build without writing code

Tool Selection

Choose the right AI tool for each task

Deployment

Take your app live in minutes

You’ll need a Replit account and Core subscription to access Agent.

Start with Agent

1

Open Replit

Head to Replit and sign in. You’ll see the prompt editor where you can instruct Agent.

Replit's AI prompt interface showing where to enter instructions for the Agent
2

Create your prompt

Start with a simple request:

Let's build a cat generator that displays a random image of a cat from the internet 
every time I press a button.

Use the “Improve Prompt” button to add more details to your request.

3

Review the plan

Agent will outline a development plan using Flask and JavaScript. Don’t worry about the technical terms—Agent handles the complexity for you.

Agent's proposed development plan for creating the cat generator application

Develop iteratively

Using Agent for major changes

Agent excels at structural changes and core functionality. Try improving the UI:

Can you change the UI to be more beautiful and playful? Use cat emojis to improve 
the appearance of the app.
Agent interface showing UI improvement suggestions with emoji additions

Refining with Assistant

Switch to Assistant for targeted improvements. For example, add dark mode:

Can we add a dark mode to the app with a toggle button to switch between dark 
and light mode?
Preview of code changes made by Assistant for implementing dark mode

Ask Assistant to explain how your app works:

Help me understand the framework this app is built on.
Assistant explaining the application's framework and architecture

Deploy your app

1

Start deployment

Select Deploy or Publish in the top navigation.

2

Configure

  1. Choose the recommended deployment option
  2. Name your app (e.g., “whisker-wonder”)
  3. Select Deploy
3

Go live

Wait 2-3 minutes for deployment. Your app will be available at your-app-name.replit.app.

Step-by-step deployment process showing how to publish the cat generator app

Best practices

Development tips

  • Start simple and iterate
  • Don’t worry about technical details initially
  • Provide context in prompts

Tool selection

  • Use Agent for broad changes
  • Switch to Assistant for specific improvements
  • Test locally before deploying

Next steps

Want to learn more about Replit’s AI tools? Check out Replit AI.