12-Year-Old Builds AI Coding Mentor KODA on a $150 Android Phone

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A 12-year-old developer has launched KODA, an AI-powered coding mentor designed to help beginners debug code, learn programming, and build projects. The tool was built entirely on a POCO C55 Android phone costing around $150, without a dedicated computer or formal computer science training. KODA uses a multi-provider API fallback chain via services like Groq and OpenRouter, with Supabase handling authentication, database management, and row-level security. The frontend relies on plain HTML, CSS, and JavaScript to avoid heavy build pipelines, and is optimized for mobile screens. The project was motivated by the creator's observation that beginners often lose hours to simple syntax errors, and aims to demonstrate that limited resources need not be a barrier to building useful software.

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