Last weekend I attended Vercel’s Prompt to Production hackathon. I wanted to build something that felt genuinely fast – not “fast for a web app” fast, but “I said a number and it already knows” fast. So I built MathVox: a mental math game where you hold the spacebar, speak your answer, and release. That’s it. No buttons, no typing (though keyboard is there if you want it).
You can have a go here : https://v0-math-game-ui-woad.vercel.app
I built 90% of this using v0 by Vercel. I literally described what I wanted – “voice-controlled, spacebar-triggered, minimalist UI, real-time feedback” – and v0 generated production-ready React components with proper state management, error handling, and accessibility baked in.
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