Build in AI Studio — AI Studio → Android Guide

✓ Reviewed August 2026 — reflects AI Studio's current Build mode

Part 2

Steps 4–6

Build Your App in AI Studio

Describe your idea, let Gemini build it, test it thoroughly — then prepare it for deployment.

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Good news!You don't need to set up Google Cloud manually. When you start a new app in AI Studio's Build mode, a GEMINI_API_KEY is automatically generated and stored as a server-side secret for you — visible any time in the Secrets panel under Settings.

Access Google AI Studio's Build Mode

Go to aistudio.google.com and sign in with your Gmail account. Select Build in the left sidebar — this opens the agentic app builder, where Gemini writes, previews, and iterates on a full Vite + React + TypeScript project for you inside the browser.

Describe Your App Idea

Type what you want your app to do, or start from a template in the App Gallery. Example prompts:

example · game

"Create a trivia game about world geography with multiple difficulty levels, score tracking, and fun facts after each answer."

example · education

"Build a language learning assistant that helps users practice Spanish vocabulary and conversational phrases with interactive exercises."

AI Studio generates a working first version in well under a minute, then you can keep chatting with the agent to add features, or open the Code tab to edit files directly.

Test Your App ThoroughlyDon't skip

Use the live preview panel to test as you go. Check: Does the AI respond appropriately? Are there errors in the console? Does it handle unusual inputs gracefully? Keep refining your prompt and settings until you're satisfied.

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Pro Tip: Have someone else test your app to catch issues you might miss. Try edge cases — empty input, very long input, rapid taps.

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Keys stay server-side. Because your Gemini API key is injected server-side by AI Studio's runtime, it's never exposed in the code you see in the browser — one less thing to worry about while you're in Build mode.