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#React Native#Expo#Expo Router#Fullstack#Chat GPT#AI#TypeScript#Expo API Routes

AI APP Challenge

Apr 22, 2026
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The Asset Bundle

Source code, Step by step guide, code snippets, and assets used for this project.

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🤖 Welcome to the AI APP Challenge Guide!

In this tutorial, we’ll build a ChatGPT-style clone using React Native and OpenAI API. You’ll learn how to create a modern mobile app with chat functionality, conversation history, and a clean interface.

Whether you're here to improve your mobile development skills or just to see how AI chat apps are built, you’re in the right place!

🚀 Learning Goals

By the end of this project, you’ll gain hands-on experience with:

  • 🧭 Expo Router – Implementing navigation with a custom side menu drawer.
  • 🔐 Expo API Routes – Building backend endpoints inside the app.
  • 🛠️ TypeScript – Writing safe and scalable code with strong typing.
  • 🧵 Zustand + Persist – Global state management with local storage.
  • 🧑‍🎨 NativeWind – Styling components using Tailwind style classes.
  • 🧠 OpenAI API Integration – Sending user messages and displaying AI-generated replies.
  • 💬 Chat History – Persisting full conversations across sessions.
  • 📝 Markdown Rendering – Formatting AI responses.

🧰 Tech Stack

  • React Native with Expo
  • Expo Router – App Navigation.
  • Expo API Routes – Backend integration.
  • TypeScript – Ensuring type safety.
  • Zustand + Persist – Persistent state management.
  • NativeWind – Tailwind like component styling.
  • OpenAI API – AI Model.

Let’s get started! 🔥