The roulette math, decoded
Casino Roulette Odds Lab is a free educational app that teaches the math behind every spin — odds, payouts and the house edge. No money. No betting. Just the truth.
The biggest update yet — new tools that turn the math into something you can poke, test and beat your own score on.
Run a whole crowd of players — up to 5,000 — through the same plan and see how they really end up: what percent go broke, finish behind, or finish ahead.
The app reads your quiz results and points you to your single best next step — the weakest category, the lesson to review, the quiz to retry.
Line up two or three bets side by side — win chance, payout, fair payout, house edge and expected value. Proof that no bet beats another.
A fresh question every day, a streak to keep alive, and a calendar of the days you've completed. One more thing learned, every day.
Unlock badges as you progress — finish every lesson, ace a category, keep a streak, reach a new level. Pure milestones, nothing to buy.
A searchable A–Z of 40+ roulette and probability terms — each clearly explained, with bookmarks to save the ones you want.
What you get
Five honest tools — no chips, no currency, nothing to win or lose.
Tap any bet on a real felt and instantly see its true odds, the payout offered, the fair payout, and the house edge.
Run thousands of fair spins and staking systems. Watch the running total drift below zero — the math, made visible.
Short, honest lessons: how the wheel works, why the house always wins, the gambler’s fallacy, why systems fail.
20 categories, 300 questions, every answer explained. Test what you know and track your best score.
A knowledge level that grows as you learn, per-category quiz scores, accuracy and streaks.
Fully translated into English, Russian, Spanish, German, French and Portuguese.
How it works
Pick any bet and see its real chances and the built-in house edge — instantly.
Spin a fair wheel thousands of times and watch why the long run always favours the house.
Work through the lessons, take the quiz, and level up your knowledge.
A look inside
