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Bet sizing
you can trust.

Kelly, Monte Carlo, parlays and ruin — one brutally honest dashboard. No accounts, no tracking. Accessible anywhere, and your numbers still never leave the browser.

Kelly— inputs

+200=3.0 · −110=1.91 · 5/2=3.5

Kelly Criterion f* = (bp − q)/b

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◈Enter probability & odds → Kelly tells optimal size.

X = bet fraction · Y = expected log-growth / bet. Half Kelly ≈ 75% growth with ~½ variance.

Stake on bankroll