felixhui is an independent publication that explains startup economics in plain language — unit economics, market sizing, runway, pricing and funding. Everything here is free to read and informational only; we sell nothing.
Startup economics can sound abstract until you connect it to real decisions. We focus on the handful of numbers that actually change how a business behaves.
What it costs to acquire and serve one customer, and what that customer is actually worth over time.
How to read a cash position, understand burn rate, and estimate how much time a business has left.
Practical ways to estimate a realistic addressable market, without inflating the number to look impressive.
Plain explanations of how notes, priced rounds and grants affect ownership and future decisions.
A lot of "startup economics" content online exists to sell a spreadsheet template, a course, or a fractional CFO retainer. felixhui was built as the opposite: a free, informational resource that explains the underlying economics clearly enough that you can build your own model, ask better questions of an advisor, or simply understand a term sheet before you sign it.
Investor decks, term sheets and forum threads keep surfacing the same handful of confusing concepts.
Public filings, academic finance literature and practitioner interviews ground every explainer.
Every guide includes a simple, numeric example so the concept isn't just abstract theory.
Guides are dated, and we return to update figures, definitions and examples over time.
“I finally understood what my cap table actually meant after reading felixhui's explainer — and nobody was trying to sell me anything.”
— Reader feedback, submitted via our contact form
Send us a note. Reader questions directly shape which explainers we write next.
