A 21-year-old college student vibe coded a guitar tone app that he says makes $25K a month five months after launch
Kyan built ToneAdapt with Cursor in about a week after ChatGPT could not give him accurate guitar tones, then posted on social media three times a day.
Subject: ToneAdapt (Kyan)Web and mobile subscription app for guitarists
Case Overview & Background
Kyan is a college student who had never built anything before. As a guitarist, he was using ChatGPT to work out how to recreate the guitar tones of songs he liked, but the answers were not accurate. Guitarists on Reddit and Instagram had the same problem, so he built ToneAdapt, a website and mobile app that helps a user sound like their favorite song in under 30 seconds.
How AI Is Used
Step-by-Step Process
He picked a problem he had as a guitarist and confirmed others had it in comment sections.
He built the whole project with Cursor in about a week.
He posted three times a day across Instagram, TikTok, YouTube and Facebook.
Customer Acquisition & Distribution
Limitations, Risks & Failure Modes
What may not apply to you, and what could go wrong:
- The figures are self-reported and were not independently checked
- The app is only months old
- A niche hobby audience can limit how big it gets
Key Takeaways
- A small problem in a hobby you know can be a paying niche
- AI coding tools let a first-time builder ship in a week
Sources
Starter Story: The First App I Ever Built Makes $25K/Month
Note: Video interview with transcript. States the $25,000 a month figure, the 100,000 users, the Cursor build and the AI APIs.
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