Add API Key
Browser-Based AI App Builder

Build mobile-ready apps with AI, right in your browser.

Describe the app you want. GenSiteHub generates a complete, self-contained HTML app — then helps you prepare it for Android. No sign-up. No backend. Your API key stays in your browser.

Create a simple calculator in HTML with a professional designTab
Design:🌙 Midnight Pro

How it works

From idea to mobile-ready app in minutes

1
🔑

Connect

Add your OpenRouter API key in settings. It stays in your browser — never sent to our servers.

2
🤖

Choose a Model

Type any OpenRouter model name. Supports every current and future model automatically.

3
💬

Describe

Tell the AI what you want to build. Be specific about features, layout, and interactions.

4

Generate

The AI creates a complete, self-contained HTML app — no CDN dependencies, works offline.

5
👁

Preview & Refine

See your app instantly. Chat with the AI to fix issues or add features.

6
🤖

Get APK

Download your HTML package and convert it to an Android APK using our recommended free service. Real APK file in minutes.

Privacy First

Built for privacy

Your data never leaves your browser

🔐

Your API Key Is Yours

Your OpenRouter API key is stored only in your browser's local storage. It goes directly to OpenRouter when generating — our servers never see it.

📵

No Account Required

No email. No password. No profile. Open the tool, add your API key, and start building immediately.

🗂

Your Apps Stay With You

Generated apps are stored only in your browser's localStorage. We do not collect, store, or transmit your prompts or generated code.

Frequently asked questions

GenSiteHub is a free tool. Generated apps are HTML-based. Results depend on the AI model and prompt quality.