Free tools · no signup
Honest tools for founders.
The same honest reads that power Kasspian, backed by real sources — free to run on your own idea, site, or business. No email. No fluff. They'll tell you the truth, even when it stings.
Idea Validator
An honest score on your idea — it'll tell you to kill it if it deserves it.
Don't build it
“Saturated with well-funded incumbents — no wedge here.”
Why your site loses customers
Paste your site — get the honest gaps costing you customers, and how to fix each.
3 gapsplausible.io
No pricing anywhere — visitors can't tell if there's a paid tier.
Where to find your customers
Where your business should actually show up to win customers — and where to skip. Honest, for your specific business.
Is your idea already taken?
Paste your idea — see the real, funded companies already in your space, each with a source, and whether you've actually got an angle.
3 already inspecialty coffee
Trade Coffee · $34M raised — no clear wedge.
Is your idea already taken?
Paste your idea — see the real, funded companies already in your space, each with a source, and whether you've actually got an angle.
Market Size Calculator
Size your market in seconds — total, serviceable, and the slice you can realistically win.
Startup Runway Calculator
Cash on hand, monthly burn — how long until zero.
Cofounder Equity Calculator
Rate each founder across five factors — get a defensible split.
What could kill your idea
The one thing most likely to sink it — and the cheapest way to check it, in two minutes.
Break-Even Calculator
Fixed costs, price, variable cost — the units you need to break even.
LTV:CAC Calculator
Lifetime value vs cost to acquire — the number investors check first.
Startup Valuation Calculator
Annual revenue times a multiple — a rough, honest starting number.
Startup Cost Calculator
One-time setup, product, and months of operating — your real launch budget.
Profit Margin Calculator
Revenue and costs in, your margin and markup out.
Freelance Rate Calculator
The income you want plus expenses, divided by the hours you can actually bill.
Pre-Money / Post-Money Calculator
Pre-money plus the raise gives post-money — and the share you give up.
Want proof it doesn't flatter? We fed famous startup flops to the same engine, names stripped.
See the teardowns →