Two 21-Year-Olds at $20K/Month, Acquired by the Platform Itself: Flusk's 18-Month Run
Flusk, a security-audit service for Bubble-built apps, was founded by two 21-year-olds and grew to $20K in monthly revenue. Eighteen months in — weeks after a prominent user publicly posted that ”Bubble should acquire them” — the platform itself reached out, and Flusk was acquired for 7 figures (salaries included).
This is a translation of the Japanese original. The Japanese version and cited primary sources are authoritative for all figures.
JPY figures in this article are rough estimates converted at ¥150/USD.
The Business Journey
| Period | Event |
|---|---|
| July 2022 | Nihoul (a high-school dropout), then CTO of no-code training company Ottho, starts offering 24-hour support for Bubble apps |
| April 2023 | Founds Flusk with former colleague Wasielewski (both 21). Pivots to a security-audit tool |
| February 2024 | Flusk 2.0 (monitoring, alerts, analytics). The same month, a prominent user publicly posts that “Bubble should acquire them” → weeks later, Bubble itself reaches out |
| September 2024 | Acquisition closes. 7 figures total (including salaries); the cash/equity portion is 6 figures. Both join Bubble full-time |
The Numbers (at Sale)
| Item | Figure |
|---|---|
| MRR | $10,000 (100 paying users at $29–65/month) |
| One-off audits | $10,000/month |
| Annualized | $240,000 |
| Users | 1,000 (including free) |
A Textbook of “Founding Inside the Ecosystem”
Flusk’s 18 months are the very playbook for starting a company inside a platform economy.
- Hold a job inside the ecosystem (CTO of a no-code training company) → get soaked in customers’ problems
- Monetize those problems through a service business (24-hour support) while learning
- Turn the most repeatable problem (security) into a tool and go SaaS
- A trusted voice in the ecosystem (a prominent user) publicly champions an acquisition
- The platform acquires it as “a feature we’d eventually have to build in-house, plus a proven team” (effectively an acqui-hire)
What This Case Teaches
Inside an ecosystem, the “acquired by the platform itself” exit can be designed, not left to chance. A capability that affects the platform’s trustworthiness (security) is territory the platform cannot ignore. Fill that gap first, and you hold a double exit: a Snapbytes→Appfire-style roll-up, or acquisition by the platform itself. Dependence is a risk — but it also means you can put the platform at the top of your list of acquisition candidates.
Learn from the honesty of disclosing the breakdown of the 7-figure total (with cash and equity at 6 figures). In acqui-hires, an “acquired for X figures” headline often includes the employment package. Just like Really Good Emails’ 9% down payment, read headlines by decomposing them — and when it’s your turn to sell, negotiate by decomposing them too.
Even at 21, with no credentials, you can become a “proven CTO” inside an ecosystem. What mattered wasn’t qualifications or résumés but contributions and reputation in the Bubble community. Emerging platforms are also the fastest place to accumulate career capital.
Related Cases
Sources
This article summarizes and analyzes the public sources above. Please refer to the primary sources for details.