Show HN: Sebastian.run – Build mobile apps from prompts using AI

Hi HN!

I’ve been working on Sebastian.run — an AI tool that lets you build mobile apps by simply describing them in natural language.

Think of it as “vibe coding” — you type:

“Build me a recipe app with favorites, search, and pastel colors.”

...and in seconds, it generates the full app (frontend + backend + logic).

My goal is to make mobile app creation as intuitive as talking to a designer — no code, no templates, just clear intent.

Why I built it: I got tired of the friction in no-code tools. They made building faster, but not simpler. So I built an AI-native alternative.

How it works:

You type a prompt describing your idea

The AI generates the full structure and UI

You preview instantly in your browser

It’s still in early beta, and I’d love your feedback — especially from developers, designers, and founders who’ve tried no-code tools before.

Try it here: https://sebastian.run

Also wrote a short piece about the concept of “vibe coding” here: https://medium.com/@tonprofil/why-i-stopped-coding-and-start...

Would love to hear your thoughts — what feels promising, what feels missing? Thanks!