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An AI resume builder and bullet-by-bullet review tool, copied from an existing revenue-proven app, built solo in 23 days and left on autopilot
~$16.5K lifetime · built in 23 days · untouched and unmarketed since November (founder-reported)
"I haven't touched the code base since November. I haven't marketed it since November, and it's still actively growing and generating new revenue." Built in 23 days by copying an app he found on a public revenue directory.
Fewer bars = easier, cheaper, or faster for an AI-assisted solo builder. Editorial judgments based on the case details.
Erik Cupsa is 22 and previously worked at Amazon, where JavaScript was the language that got him the job. About four months before recording, he vibe-coded an AI resume generator and review tool in 23 days. At the time of the video it shows roughly $16.5K in lifetime revenue and $1,400 in monthly recurring revenue — and, as he stresses repeatedly, he has not touched the codebase or marketed it since November, yet it is still slowly growing and generating new revenue. The product itself is straightforward: users generate a resume based on the format that got him and thousands of others tech jobs, then run an AI review feature that breaks the resume down bullet by bullet and tells them what to fix to land in the 'yes' pile instead of getting rejected. What makes this worth an entry is not the scale — $1,400 MRR is a modest indie result and he is upfront about it — but the method, which is unusually clean and repeatable. He did not agonise over an original idea. He argues bluntly that in 2026, with AI, ideas are worth almost nothing and shipping fast is everything, so he went looking for an already-proven app to replicate. Our read: this is a textbook small-but-real indie case. The receipts are founder-reported and unaudited, but the specificity (a stated MRR, a stated lifetime figure, and a concrete acquisition experiment with numbers) is exactly what separates it from the advice-only content around it. Treat it as a replicable template, not a get-rich outcome.
Cupsa's first users came from TikTok, and he did not invent the creative. He went to his niche on TikTok, found the video formats already going viral for competing job-search tools, rebuilt the same structure with his own twist, and changed the call to action to point at his app.
The quick-reference card — acquisition channels, replication playbook, and risk map — is members-only.
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Data credibility: Founder-reported and unaudited. Erik Cupsa states ~$1,400 MRR and ~$16.5K lifetime revenue for his AI resume app, built in 23 days and unmarketed/untouched since November; these are verbal claims in the video, not shown on a Stripe dashboard on screen, and we did not independently verify them. The acquisition figures — one copied TikTok video at 117,000 views and ~900 sign-ups, and a ~2.6x ROAS ($130 back per $50 spent) — are likewise self-reported. The exact price point, subscriber count and margins were not disclosed. The app is described by function (AI resume generator + bullet-by-bullet review tool) but not named on camera. Idea-sourcing tools cited (YC Request for Startups, TrustMRR) and the dev stack (Warp, Claude Code, Next.js, Vercel, React Native/Expo, Supabase, Clerk, Firebase, Stripe) are as stated. The video is partly promotional for the creator's own channel and sponsored in part by JetBrains/Kotlin.
The money runs through Stripe, and Cupsa never states the price or the subscriber count on camera. What he does give is the shape of it: roughly $16.5K lifetime, $1,400 in current monthly recurring revenue, and $123 on the day he recorded, from an app built in 23 days and untouched since November.
The closest thing to a flywheel here is a money loop, not a content loop. Once a video performed organically, Cupsa put another $30 to $50 behind it on TikTok Ads and Meta Ads to push it to roughly 10,000 more people, and on the winner he got about $130 back for every $50 spent.
Cupsa removes most of the doubt before the quiet stretch starts, and that is the transferable move. He did not test whether anyone wants an AI resume tool.
The rest of this breakdown — 10 more sections — is in the Unicorn Club, with every section of all 1,335 ideas: first customers, first dollar, the flywheel, and the silent stretch.
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