Elizery

Arvidus is a business simulation platform for founders who are about to
commit real money: raising a round, expanding, launching a product, or
just deciding whether an idea is worth pursuing.

A business plan in a spreadsheet accepts any number you type into it.
Arvidus does the opposite. It takes your assumptions and stress-tests
them across thousands of scenarios using Monte Carlo simulation and
multi-agent modeling. Instead of one optimistic projection, you get the
full picture: in how many futures your model survives, and where it
breaks first.

Free tier to start, no credit card.