I built a churn simulator, an MRR calculator and a pricing calculator. Free, no signup — take them

I kept rebuilding the same three spreadsheets every time I needed to sanity-check a number, so I turned them into web tools and put them online for free. No account, no email gate.

They're in the footer of founder-pulse.com — MRR calculator, churn simulator, pricing calculator.

The churn one is where I'd start. Most founders I talk to underestimate what 5% monthly churn does over a year. It doesn't feel like much month to month, and it quietly caps your growth no matter how many customers you add at the top. Seeing the curve is more convincing than reading the formula.

They're free because it's the honest version of a lead magnet. You get the whole thing. If the thinking behind them is useful, you'll find the rest of what I do on your own.

What's missing? If there's a fourth calculator you keep rebuilding by hand, tell me and I'll build it.