$23k/month with excel fomulas, crazy! | Starter Story

Excel FormulaBot, a website that does nothing but generate Excel formulas using AI, makes $23,000 a month. The founder built it with no code, launched it on Reddit, and got his first sale five minutes later. The episode breaks down why this seemingly trivial tool works so well—and what it reveals about finding product-market fit with a simple, targeted solution.

The psychology of a "billion-person pie"

The core insight behind Excel FormulaBot is not technical but psychological. Over a billion people use Microsoft Excel, and a significant portion of them find writing formulas frustrating or intimidating. The founder identified a universal pain point—the friction between wanting a result and not knowing the syntax to get it—and built a tool that removes that friction entirely.

The business model is deliberately small: give a few formulas away for free, then charge $15 a month for continued access. This is not a high-ticket SaaS product. It is a micro-transaction for a micro-problem. But when you multiply that $15 by a tiny fraction of a billion-person user base, the numbers become large. The founder understood that he did not need to capture a huge share of the market; he only needed a sliver of a massive one. This is the opposite of trying to build a platform or a full-featured product. It is a focused, low-friction solution to a single, recurring annoyance.