Arbitro - Bet Optimizer

Turn any odds into a guaranteed result — split stakes with friends, hedge your bets, and never risk it all on one outcome. Free for 15 days.

Arbitro turns betting odds into a guaranteed outcome.

Enter the odds for every possible result — 2-way, 3-way, or more — and your budget. Arbitro calculates exactly how much to stake on each outcome so your group comes out ahead no matter who wins, or keeps the loss as small as mathematically possible when there's no free edge.

Built for people who bet with friends, not against them.

WHAT YOU CAN DO • Optimal stake split — guarantees the same result whichever outcome hits • Favorite + Hedge — back the outcome you believe in, then set exactly how much you're comfortable losing if you're wrong • Compare against an equal split to see what the math actually saves you • Split winnings evenly across everyone, or let one person keep it all • Save every calculation and revisit it later • Share results instantly over WhatsApp, formatted and color-coded • Export a clean, colorful PDF report to send anywhere

FREE TO TRY Every feature is unlocked for 15 days, no account required. After that, 2-outcome calculations stay free forever — unlock Pro with a single one-time payment (no subscription) for unlimited selections, unlimited budget, and every save/share/export tool.

PRIVATE BY DESIGN No sign-up, no ads, no data leaves your phone. Your bets are yours.

Available in English, Español, and Français.