GTM Sauce

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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5 tactics

ToneAdapt · B2C · guitar tone matching app

First video went viral overnight; 100K+ users and ~$25K/month within 5 months

From launch, posted short videos 3 times a day and reposted each one to Instagram, TikTok, YouTube and Facebook. Put his own face on the brand from day one so users feel they are joining his journey as he adds gear and improves the app. Videos show the product solving the problem in real time. He advises committing to 3 posts a day for at least a month and not overthinking content: any content beats none. Background doing paid UGC for brands taught him viral formats.

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Starter Story · 2026-06-14

ToneAdapt · B2C · guitar tone matching app

Founder says he scaled winning formats aggressively; no separate numbers

Once a video converts, it becomes the template: remake it ~50 times with tiny variations, hire UGC creators to copy the exact format ~60 times a month, and put money behind it on Meta ads and TikTok ads. Ride the format until it stops working, then go back to posting relentlessly to find the next winner.

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Starter Story · 2026-06-14

ToneAdapt · B2C · guitar tone matching app

Many guitarists had the same problem and no real fix existed

Played guitar almost daily for over a year; noticed he was using ChatGPT to work out guitar tones and it was inaccurate. Asked other guitarists on Reddit and in Instagram comment sections, found many had the same problem and no real solution existed, then built it. Advises picking a hobby you do daily or weekly, where there is no solution, a slow process or inaccurate results.

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Starter Story · 2026-06-14

ToneAdapt · B2C · guitar tone matching app

iOS app made ~$14K with 397 subscribers in its first month

Built V1 as a web app in about a week with AI coding (Supabase, Vercel, Mailgun, Stripe, OpenAI API, Tavily search API, Claude Code), charged from the start with Stripe, and skipped polish like logos. Web revenue and feedback came first; a few months later he built a native Swift iOS app (Vercel backend, Supabase, RevenueCat, Superwall paywall A/B tests).

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Starter Story · 2026-06-14

ToneAdapt · B2C · guitar tone matching app

Subscription tiers: $10/week and ~$60/year, on web (Stripe) and iOS (RevenueCat); paywalls and experiments run through Superwall on iOS.

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Starter Story · 2026-06-14

Numbers mentioned

WhoMetricValueContextWhen
ToneAdaptrevenueUSD 25K/month
approximate
Combined web + mobile revenue, past four weeks ('over $25,000')1:48
ToneAdaptrevenueUSD 11.5K/month
approximate
Website only, Stripe dashboard, last 4 weeks2:26
ToneAdaptrevenueUSD 14K/month
approximate
iOS app only, first 4 weeks after launch2:26
ToneAdaptrevenueUSD 15K/month
approximate
Host's restatement of mobile app revenue; guest's figure was ~$14,0006:30
ToneAdaptpaying users397 subscribersActive subscribers on the iOS app, one month after its launch ('over 397')2:26
ToneAdaptrevenueUSD 45K/quarter
approximate
Website revenue over the past 3 months2:26
ToneAdaptnew customers1,400 subscribers/quarter
approximate
New website subscribers over the past 3 months2:26
ToneAdaptusers100K users
approximate
Total users ('over 100,000')1:09
ToneAdapttime to milestone5 months
approximate
Launch to ~$25K/month and 100K+ users ('under five months')1:09
ToneAdaptpriceUSD 10/weekWeekly subscription1:48
ToneAdaptpriceUSD 60/year
approximate
Annual subscription ('around $60')1:48
ToneAdapttime to milestone7 days
approximate
Time to build V1 (first-ever project, fully vibe-coded)5:28
ToneAdaptrank2 rankApp Store search position for keyword 'guitar tone', below sponsored results; host checked live11:38
ToneAdaptactivity volume3 posts/daySocial posting cadence, reposted to Instagram, TikTok, YouTube, Facebook6:56