Founder’s Engine
Bladesweight 4manual · 3 formats
Every founder does the same math on the back of an envelope at two in the morning: how much comes in, what we're trying next, and how long the money lasts. Founder's Engine puts that math in one place — revenue streams feed into experiments, and both feed your runway. Change a number upstream and watch the horizon move.
This is not a screenshot. It's the real Blade, running right here — go on, put something in it. Its tabs feed each other; try one, then look at the next.
Open the demo full-screen: /demos/founders-engine.html
Questions people ask
How does Founder's Engine calculate runway?
Your revenue streams and the experiments you're running feed into one runway figure. Adjust a stream and the runway math updates, so you can see the horizon move before you commit to anything.
Is Founder's Engine useful before I have real revenue?
Yes — arguably most useful then. You can sketch streams that don't exist yet, attach experiments to them, and see honestly how long the current money holds while you find out.
Do I need an account or a subscription to use Founder's Engine?
No. It's a single HTML file that runs offline in your browser. Your financials never leave the page, there's nothing to sign up for, and the file is yours for good. There's a live demo on this page — go on, try it, it's the real thing.
Fits your knife at weight 4. Nothing here is final — Knife follows Life. Reforging within your tier is free, forever. Add it, drop it, reforge later; the file stays yours either way.