Starter Story · 2026-06-14
The First App I Ever Built Makes $25K/Month
Kyan, a 21-year-old CS student at San Diego State, built ToneAdapt, a web and iOS app that tells guitarists how to set up their own gear to sound like any song. Vibe-coded V1 in a week over Thanksgiving break; ~5 months later it has 100K+ users and ~$25K in the last 4 weeks (~$11.5K web via Stripe, ~$14K from an iOS app launched a month earlier). Growth came from founder-led short videos posted 3x a day across Instagram, TikTok, YouTube and Facebook, then scaling winning formats with remakes, UGC creators and paid ads.
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Numbers mentioned
| Who | Metric | Value | Context | When |
|---|---|---|---|---|
| ToneAdapt | revenue | USD 25K/month approximate | Combined web + mobile revenue, past four weeks ('over $25,000') | 1:48 |
| ToneAdapt | revenue | USD 11.5K/month approximate | Website only, Stripe dashboard, last 4 weeks | 2:26 |
| ToneAdapt | revenue | USD 14K/month approximate | iOS app only, first 4 weeks after launch | 2:26 |
| ToneAdapt | revenue | USD 15K/month approximate | Host's restatement of mobile app revenue; guest's figure was ~$14,000 | 6:30 |
| ToneAdapt | paying users | 397 subscribers | Active subscribers on the iOS app, one month after its launch ('over 397') | 2:26 |
| ToneAdapt | revenue | USD 45K/quarter approximate | Website revenue over the past 3 months | 2:26 |
| ToneAdapt | new customers | 1,400 subscribers/quarter approximate | New website subscribers over the past 3 months | 2:26 |
| ToneAdapt | users | 100K users approximate | Total users ('over 100,000') | 1:09 |
| ToneAdapt | time to milestone | 5 months approximate | Launch to ~$25K/month and 100K+ users ('under five months') | 1:09 |
| ToneAdapt | price | USD 10/week | Weekly subscription | 1:48 |
| ToneAdapt | price | USD 60/year approximate | Annual subscription ('around $60') | 1:48 |
| ToneAdapt | time to milestone | 7 days approximate | Time to build V1 (first-ever project, fully vibe-coded) | 5:28 |
| ToneAdapt | rank | 2 rank | App Store search position for keyword 'guitar tone', below sponsored results; host checked live | 11:38 |
| ToneAdapt | activity volume | 3 posts/day | Social posting cadence, reposted to Instagram, TikTok, YouTube, Facebook | 6:56 |