Risk simulator
Position Sizing Game
Test how win rate, payoff ratio, drawdown, and risk per trade interact over a run of trades.
MarketMates experiments
Marble Lab
Small, practical tools for thinking clearly about trading risk, behaviour, and decision quality. No fluff. Minimal goblins.
Objective calculator
Position Sizing Calculator
Estimate 1R, expected return, expectancy, and Monte Carlo drawdown from your trading objectives.
Growth modeller
Compounding Returns Calculator
Model smooth growth, variable monthly returns, percentile outcomes, and drawdown estimates over time.
Drawdown lesson
Drawdown Recovery Calculator
See the return required to recover from a drawdown, with simple bars, a curve, and a quick reference graphic.
Probability lesson
Edge Simulator
Explore win rate, payoff, R-multiples, expectancy, and why the highest win rate can still be the worst deal.