> ## Documentation Index
> Fetch the complete documentation index at: https://docs.openv2.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Welcome

> Openv2 lets you build real Expo and React Native apps with AI, entirely in the browser.

Openv2 is a browser-based platform for building **real mobile apps** with AI. You describe what you want, and the AI assistant writes files, runs terminal commands, and updates a live preview—all without installing Xcode, Android Studio, or a local Node environment.

## How it works

Your project runs inside a **WebContainer**: a full Node.js environment in the browser tab. When you send a prompt, the assistant edits your Expo project, runs commands like `npx expo install`, and starts the dev server. You see the result in a **live device-frame preview** seconds later.

Projects are **saved to the cloud automatically**. Every completed assistant turn can create a **version snapshot**, so you can rewind to any earlier state when an experiment goes wrong.

## Who Openv2 is for

* **Founders and PMs** who need a working prototype without a full engineering setup
* **Developers** who want AI to handle scaffolding, refactors, and repetitive code
* **Teams** who collaborate on the same project with editor and viewer roles

## What you're responsible for

Openv2 handles the build loop. A few things stay on your side:

* **App Store and Google Play accounts** — Openv2 supports Expo/EAS-style build flows, but submission is between you, Apple, and Google
* **Store policies and review guidelines** — review requirements are yours to meet
* **Credits** — AI usage is metered by credits; see [Billing & plans](/billing-plans) for limits and top-ups

## Project structure

Each project has a unique ID and opens at `/chat/{id}`. The default template uses an Expo file layout with an `app/` router and standard Expo config. You work through the **Dashboard** to create or resume projects.

## Where to go next

<CardGroup cols={2}>
  <Card title="Validate your idea" icon="lightbulb" href="/idea-validation">
    Run a quick check before investing time and credits in a build.
  </Card>

  <Card title="Build your first app" icon="rocket" href="/first-app">
    Sign in, create a project, send your first prompts, and see a live preview.
  </Card>

  <Card title="Test on your device" icon="smartphone" href="/test-on-device">
    Use Expo Go and QR codes to preview your app on a real phone.
  </Card>

  <Card title="Prompting tips" icon="message-square" href="/prompting">
    Learn the prompt patterns that produce cleaner code with fewer round-trips.
  </Card>
</CardGroup>