The betting sites you can actually trust
We cross-check every casino and bookmaker against seven countries' official licensing registers — so before you deposit, you know exactly which sites are legal where you are. No hype, no invented ratings.
Big-name brands, and where they're legal
Every brand cross-checked against official government registers — no invented ratings, just verified licensing.
Officially licensed in Brazil, Ontario, Pennsylvania, Tennessee & UK.
Officially licensed in Brazil, Ontario & UK.
Officially licensed in Brazil, Ontario, Pennsylvania & Tennessee.
Officially licensed in Ontario & UK.
Officially licensed in Brazil & UK.
Officially licensed in Ontario, Pennsylvania & Tennessee.
The Gamblerfy Bonus Value Score
A single, transparent number for the real expected value of a bonus — factoring wagering (rollover), game contribution, max cashout, min odds and expiry. The formula is public. No hype, no fake ratings.
Honest by design, not by slogan
Four principles behind every page — the reasons a rating here means something.
Real value, decoded
We translate confusing terms into one honest score you can compare at a glance.
Fresh daily
Bonuses and terms change constantly. We re-check and date every offer — no stale pages.
Evidence-based
Every review follows a public methodology with sources and dates. We show our work.
Licensed only
We only cover operators licensed in your country, and we say the bad terms out loud.
Do the math yourself
Five calculators and converters — no signup, running entirely in your browser.
Bonus Value Calculator
Score any bonus 0–100 — deposit match, no-deposit, cashback or sticky. Free
Odds Converter
Decimal ⇄ fractional ⇄ American, plus implied probability and payout. Free
Margin & Fair Odds
The bookmaker's margin (vig) and the no-vig fair odds behind any market. Free
Parlay / Accumulator
Combine 2–8 legs for the odds and payout — and why margin compounds. Free
Hedge / Cash-Out
Lock in a guaranteed result by staking the opposite outcome. Free
The knowledge behind every rating
Plain-English guides that decode the terms deciding what a bonus is actually worth.
22 plain-English guides
The foundation behind every rating — wagering & rollover, no-wagering bonuses, free bets, max cashout, RTP & game contribution, free spins, slot volatility, sticky vs cashable bonuses, bonus red flags, spotting a scam casino, ID checks & payout times, checking a casino's licence, and how betting odds and the bookmaker margin actually work.
Bonuses and bookmakers, market by market
Gambling rules, licensed operators and offers differ in every country. Pick yours — we only list operators licensed by that country's regulator.
488 UKGC-licensed operators · 1,430 live domains.
Data liveView list → 🇧🇷Brazil 🛡️ SPA / Ministério da Fazenda85 licensed companies · 187 official .bet.br brands.
47 registered companies · 81 official gaming sites.
Data liveView list → 🇺🇸Pennsylvania 🛡️ PA Gaming Control Board26 licensed operators · 35 casino & sportsbook sites.
Data liveView list → 🇨🇴Colombia 🛡️ Coljuegos15 authorized operators on licensed .co sites.
9 Atlantic City licensees · 36 approved sites.
Data liveView list → 🇺🇸Tennessee 🛡️ Tennessee Sports Wagering Council9 licensed sportsbooks · online-only.
Data liveView list → 🇪🇸Spain 🛡️ DGOJHow to verify any operator on the official DGOJ register.
Coverage buildingHow to verify →