Disclosure: some links on this page are affiliate links — if you subscribe through them, BetArbi may earn a commission at no extra cost to you. It never changes our honest assessment: we only cover tools we would actually recommend, and we tell you where the free options are enough.
Key takeaways
- A surebet finder scans dozens of bookmakers in real time and alerts you to arbitrage opportunities as they appear.
- The finder finds the arb; you still place the bets and size them — that is what our free calculator is for.
- Free finders are fine to learn on; paid finders scan more books, faster, for more and bigger edges.
- The best choice depends on where you bet: EU, US or UK-focused tools differ a lot.
- Almost all offer a free trial — test coverage in your own region before paying.
Finder vs calculator: what does what?
People mix these up. A finder (also called an arbitrage finder, arb finder or surebet scanner) is a monitoring tool: it watches the odds across many bookmakers and tells you when and where a surebet exists. A calculator tells you how much to stake on each outcome so your profit is equal whichever result comes in.
You need both. The good news: the calculator half is free right here. Use our surebet & arbitrage calculator (2–15 outcomes) to size any arb a finder shows you — no sign-up, instant.
Best surebet & arbitrage finders in 2026
There is no single “best” finder — the right one depends on the bookmakers you use and your experience level. Here is how the main options compare. (Pricing and coverage change often — always confirm the current details and start a free trial on the provider’s own site.)
| Finder | Best for | Covers | Free trial |
|---|---|---|---|
| RebelBetting → | All-round arbing & value betting | Large EU/global bookmaker list | Yes |
| OddsJam → | US sportsbooks (arb + positive EV) | US books & exchanges | Yes |
| BetBurger → | European coverage & fast alerts | Large EU bookmaker/exchange list | Yes |
| OddsMonkey → | UK beginners & matched betting crossover | UK bookmakers & exchanges | Free plan |
| OddStorm → | Live / in-play arbs & a free tier | Pre-match & live, many books | Free tier |
RebelBetting
One of the longest-running services in the space, covering both surebets and value betting with a large bookmaker list and polished tools. If you want a single, well-supported all-rounder and you bet with European or global books, it is the common default. Start on the free trial and check how many arbs it surfaces for your bookmakers before subscribing.
OddsJam
Built around the US market, with arbitrage, positive-EV and low-hold tools tuned for American sportsbooks. If you bet with books like the major US operators, this is usually the strongest fit; for European-only bettors, an EU-focused scanner will find more.
BetBurger
A long-running European arb and value scanner known for a big bookmaker/exchange list and fast alerts. A strong alternative to RebelBetting for EU-based arbers — trial both and keep whichever surfaces more usable arbs for your accounts.
OddsMonkey
The friendliest starting point for UK beginners. It is best known for matched betting but includes odds-matching and arb-style tools plus genuinely good tutorials, and it has a free plan. If you are new and UK-based, start here, then step up to a dedicated arb scanner as your volume grows.
OddStorm
A real-time surebet and value scanner with pre-match and live (in-play) arbs and a free tier to try. Good if you want to experiment with live arbing without paying up front — just remember in-play odds move fast, so speed and a calculator matter even more.
Free surebet finders: are they enough?
You do not have to pay to start. A free finder — a free tier of the tools above, or simply comparing odds by hand across a few bookmaker tabs and an odds-comparison site — is enough to learn, and to catch the occasional obvious arb. The honest trade-offs of going free:
- Fewer bookmakers scanned, so you miss opportunities that only appear across books a free tool doesn’t cover.
- Slower refresh, so by the time you see an arb the odds may already have moved.
- Smaller / rarer edges, because the best arbs get taken quickly by people scanning in real time.
The sensible path: start free, learn the workflow, and only pay for a scanner once you have the bankroll and the bookmaker accounts to actually use the extra volume it finds.
How to use a finder with our calculator
- Your finder alerts you to an arb — the event, the bookmakers and the odds for each outcome.
- Open our surebet calculator and pick the number of outcomes (2-way, 3-way, up to 15).
- Type in the odds and your total stake. The calculator instantly splits the stake so your profit is equal whichever outcome wins.
- Place every leg fast, before the odds move — then bank the guaranteed margin.
New to all this? Read what is arbitrage betting and the arbitrage formula first, so you understand exactly what the finder is showing you.
Frequently asked questions
- What is a surebet finder?
- A surebet (or arbitrage) finder is software that constantly scans the odds at dozens of bookmakers and exchanges and alerts you the moment the same event is priced so that backing every outcome guarantees a profit. It finds the opportunity; you still place the bets and use a calculator to size the stakes.
- Do I need a paid finder, or is a free one enough?
- A free finder (or manual odds comparison) is fine to learn and to place the occasional arb, but free tools cover fewer bookmakers, refresh more slowly and show smaller edges. Paid finders scan more books in real time, which means more and better opportunities — worth it only once you have the bankroll and bookmaker accounts to use the volume.
- Are arbitrage finders legal?
- Yes. A finder is just an odds scanner — using one is completely legal wherever betting is legal. Arbitrage itself is legal too, though it breaches the terms of many bookmakers, who may limit or close accounts they identify as arbing.
- Will using a finder get my accounts limited faster?
- The finder itself is invisible to bookmakers — it only reads public odds. What gets accounts limited is your betting pattern (always backing the value side, round-number stakes, fast arbing). Stake sensibly and mix in normal-looking bets to stay under the radar.
- Which surebet finder is best?
- There is no single best — it depends on where you bet. RebelBetting and BetBurger suit European bookmakers, OddsJam is built for US sportsbooks, and OddsMonkey is the friendliest starting point for UK beginners. Most offer a free trial, so try before you commit.
- How do I use a finder with this site?
- The finder shows you an arb (the event, the bookmakers and the odds). You then paste those odds into our free surebet calculator, which tells you exactly how much to stake on each outcome for an equal, guaranteed profit whichever way it lands.