I Vibe-Coded an App in Just Two Hours (And Regretted It the Next Day)

A developer rapidly built an AI-powered application in two hours to generate ukulele chords for any song using Google's Gemini. The app used an AI agent to find songs online and infer the chords, which initially seemed like a great success after positive feedback. However, the operational cost of the AI agent proved to be prohibitively expensive, costing $52 for a single day of use by only 200 users. This experience serves as a cautionary tale about the importance of validating the business model and unit economics of AI applications, as a technically impressive solution can fail due to unsustainable running costs.