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LTV:CAC ratio calculator. Input your unit economics β get an instant verdict on whether your business model works.
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that compounds.
Tools, essays, and frameworks for founders building in Europe. From unit economics to raising your first million β the things I wish someone had told me.
Lech Kaniuk is a Polish-Swedish serial entrepreneur who has founded 10+ companies including PizzaPortal (acquired by Delivery Hero) and SunRoof. An angel investor in 40+ startups, he is the author of three books on startup fundraising and unit economics.
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Essays
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- STATUS AVAILABLE Β· Warsaw, PL
- READING The Almanack of Naval Ravikant (62%)
- BUILDING lechkaniuk.com
- WRITING Why Your Burn Rate Tells a Better Story Than Your Revenue
- KEYNOTE Available β Book now
Reply within 48h on business days.
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Updated 2026-04-10 Β· Warsaw, PL
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Fundraise Readiness Check
10 questions. 3 minutes. An honest score on whether you're ready to pitch investors β and what to fix first.
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Cap Table Simulator
Model dilution across funding rounds. See what your stake looks like after Series A, B, and beyond.
In development
From the Library
Read the important parts first.
#029 European Ecosystem
The European Founder's Guide to Fundraising
The US playbook does not transplant. Here is what actually works in European fundraising.
10 min
Read β
#028 European Ecosystem
Building a Startup in Poland vs Silicon Valley
Not a complaint β a strategic map. The differences that change what playbook you should use.
9 min
Read β
#025 Investing
What I Look For Before Writing a Check
The actual criteria. Not the polished version I give at panels.
8 min
Read β
Book PL
AnioΕ w Piekle
The first Polish book written from an angel investor's perspective. Everything I learned investing in 40+ startups.
Free Audiobook Preview
Listen to the first two chapters.
AnioΕ w Piekle β read aloud by the author. Chapters 1 and 2 are free. Email unlock from chapter 3.
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Chapter 1 β Dlaczego anioΕy ginΔ w piekle
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Request for Startups
What I'm actively looking for.
These are the categories where I think there's still a large, unsolved problem in the Polish and European market. If you're building here, I want to talk.
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