Free tools

Five diagnostics. No account, nothing saved.

Each one measures something specific about how you trade, in about ten minutes or less. These are the same diagnostics used throughout the book, built so you can run them on your own trading before you read a page. Pick the one that matches what you’re trying to find out — or work through all five.

Bankroll math · interactive slider

The Survival Clock

How many consecutive losses your bankroll can absorb. Drag your bet size and watch your runway collapse — or hold.

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Payout math · interactive graph

The Price Sensitivity Calculator

A five-cent gap feels like nothing. The same move can shift your payout by 20% in one price range and over 40% in another. Drag the price and watch the curve.

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Behavioral diagnostic · 20 questions

The Trap Test

Which of seven traps runs your account when things go wrong — the Revenge Trader, the Bag Holder, the Stacker, and four more. 84% of Polymarket wallets lose money. This finds out why yours might.

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Pricing literacy · 3 acts

The Value Shop

Every market wears two price tags: the one the crowd reads and the one the contract pays. Three short acts teach the single move of value shopping.

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Decision test · 7 decisions

Can You Read a Market?

Seven decisions, every answer already on the screen. It can’t measure your edge — nothing this fast can. It can measure what your misreads cost.

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Test yourself before the market does.

Five interactive tools that check your decisions, not your predictions — find the trap your account defaults to under pressure, price the toll on a real trade, and see whether you can actually read what’s on the screen in front of you.

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Takes a couple of minutes. Nothing is saved unless you ask for your results by email.