StartupCards — the 41-card deck that tells you whether your idea is a real business.

There's a set of questions every founder has to answer — in the right order, honestly — to know if an idea actually works. Startup Cards is those questions, one card at a time. Whether you plan to bootstrap it or raise money, the work is the same: knowing your idea holds together before you pour a year into it.

You're getting the digital deck:
•⁠ ⁠The full online course — a video walkthrough from Ruth for every one of the 41 cards
•⁠ ⁠A printable PDF of all 41 cards (A6) — print and cut them yourself if you want them in hand
•⁠ ⁠The interactive version inside the course platform

• One-time payment — no subscription
•⁠ ⁠All future updates included, free

By the last card you'll have a complete, tested business model — problem, target group, numbers, all fitting together.

Built by Ruth Cremer — mathematician, ex-VC, and the advisor behind every founder on Shark Tank Germany for 9 years.

30-day money-back guarantee. Work the first 10 cards; if you're not making real progress, email Ruth for a full refund — no questions, no forms.