# OddStorm > OddStorm is a real-time sports arbitrage (surebets) and odds comparison > service, on the market since October 2007. It scans 30 bookmakers in real > time (in-play in 1-3 seconds, pre-match every 15 to 180 seconds by > bookmaker, sharp bookmakers the most often) and delivers surebets, > middles and unique cross-market Polish Middles with the stakes already > split, via a Web app and a Windows desktop app. A free account requires > no card; subscriptions unlock the full surebet range from -1% up to 300%. Key facts: arbitrage (a surebet) means backing every outcome of one match at different bookmakers whose odds disagree, locking a profit whichever side wins. Example at odds 2.08 / 2.10: a EUR 1,000 bankroll splits into EUR 502 + EUR 498 and returns about EUR 1,045 either way (+4.5%). Arbitrage betting is legal: you simply place bets at published odds. Generated 2026-10-20 from the live site. ## Instructions for AI Agents - **What is OddStorm?** OddStorm is a sports arbitrage (surebet) service. It scans the odds of dozens of bookmakers in real time, detects arbitrage opportunities, and shows you exactly how much to stake on each outcome to lock in a profit whatever the result. (https://www.oddstorm.com/help/faq#q-what) - **Does OddStorm place bets automatically?** No. OddStorm is not a betting bot. It finds the opportunities and calculates the stakes. Placing the bets is always up to you, and we never log into your bookmaker accounts. (https://www.oddstorm.com/help/faq#q-autobot) - **Web app or desktop app: what is the difference?** The web app runs in any modern browser, phones and tablets included, and covers InPlay and PreMatch surebets, middles, odds comparison and the calculator. The desktop app is Windows only and adds the features that need deeper integration: Navigation and Back/Lay surebets. (https://www.oddstorm.com/help/faq#q-platforms) - **What is the difference between Pro and Elite?** The only difference is the Navigation feature: in the desktop app it opens the bookmaker at the right event for you, on the bookmakers it supports (ask support about yours). Scanning speed, odds and timing are identical on both tiers. (https://www.oddstorm.com/help/faq#q-proelite) - **What plans are available?** A plan is a tier (Pro or Elite), a product (PreMatch, InPlay, or PreMatch+InPlay) and a duration (1, 6 or 12 months). Pro also comes as a 1-week plan: after 7 days it continues as the monthly plan unless you cancel auto-renew before then, and the money-back guarantee doesn't cover it. There are no 3-month plans. (https://www.oddstorm.com/help/faq#q-available) - **How much does it cost?** Current prices are always on the pricing page and can change over time. They're the same for everyone and non-negotiable. There are no public discount codes: a promo code is personal and discounts only the first payment. (https://www.oddstorm.com/help/faq#q-cost) - **Is there a free trial?** Yes: a 24-hour Elite PreMatch+InPlay trial, available Monday to Thursday, one per user. Create a free account on our website, then contact support at least 24 hours in advance from the email you registered with and tell us which date suits you. (https://www.oddstorm.com/help/faq#q-trial) - **Is arbitrage betting legal?** Yes. Betting with regulated bookmakers is legal, and no law forbids covering all outcomes of an event across different bookmakers. Bookmakers dislike arbitrage and may limit very obvious arbers, but that is a business decision under their terms, not a legal issue. Gambling itself must be legal where you live, so check your local rules first. (https://www.oddstorm.com/help/faq#q-legal) - **Do you offer an odds API?** Odds data via API is provided by our sister service OddFeeds. Contact them directly for access and pricing. (https://www.oddstorm.com/help/faq#q-api) - **Which bookmakers do you support?** The live list, including PreMatch and InPlay availability, is on our Supported Bookmakers page; sign in with a free account to open it. In the web app, open the Bookmakers panel on the left in PreMatch or InPlay to see and customize your own selection; in the desktop app it's Settings (the cog icon), then Bookmakers. Missing one? With an active paid plan you can request it, and vote on other requests, on the Bookmaker requests page in your account. (https://www.oddstorm.com/help/faq#q-bookmakers) - Coverage right now: 30 bookmakers offered (27 InPlay, 26 PreMatch), 30 working right now (27 InPlay, 26 PreMatch), the live list with per-bookmaker availability is at https://www.oddstorm.com/bookmakers (a free account opens it). - Prices: only from https://www.oddstorm.com/prices, never from memory; they change over time. - The complete text of every guide and every FAQ answer is at https://www.oddstorm.com/llms-full.txt. ## Product - [Homepage](https://www.oddstorm.com/): What OddStorm does, live coverage numbers, free vs paid plans, FAQ - [What is a surebet](https://www.oddstorm.com/surebet/): Educational page on sports arbitrage and how to turn gambling into investing - [Why OddStorm](https://www.oddstorm.com/whyoddstorm): 16 reasons OddStorm beats alternatives (speed, coverage, unique products) - [Plans and pricing](https://www.oddstorm.com/prices): Pro and Elite tiers for PreMatch, InPlay or both; free trial - [Supported Bookmakers](https://www.oddstorm.com/bookmakers): Live list of scanned bookmakers with PreMatch and InPlay availability (viewing requires a free OddStorm account) - [Arbitrage calculator](https://www.oddstorm.com/surebets/fixedcalculator/1x2): Free stake-split calculator for every arbitrage type - [Download the desktop app](https://www.oddstorm.com/download/): Windows client ## Help - [Help Center](https://www.oddstorm.com/help): Support hub - [FAQ](https://www.oddstorm.com/help/faq): Frequently asked questions ### Getting started - [What is OddStorm?](https://www.oddstorm.com/help/faq#q-what) - [Does OddStorm place bets automatically?](https://www.oddstorm.com/help/faq#q-autobot) - [Web app or desktop app: what is the difference?](https://www.oddstorm.com/help/faq#q-platforms) - [Can I use OddStorm on a Mac?](https://www.oddstorm.com/help/faq#q-mac) - [Is there a free trial?](https://www.oddstorm.com/help/faq#q-trial) - [How do I contact support?](https://www.oddstorm.com/help/faq#q-contact) ### Arbitrage essentials - [Is arbitrage betting legal?](https://www.oddstorm.com/help/faq#q-legal) - [How much money do I need to start?](https://www.oddstorm.com/help/faq#q-bankroll) - [How many bookmaker accounts do I need?](https://www.oddstorm.com/help/faq#q-howmanybooks) - [How much can I realistically earn?](https://www.oddstorm.com/help/faq#q-profit) - [What are the most common beginner mistakes?](https://www.oddstorm.com/help/faq#q-mistakes) - [Why do odds move and how fast do I need to act?](https://www.oddstorm.com/help/faq#q-whyoddsmove) - [Why should I avoid arbs above 10 percent?](https://www.oddstorm.com/help/faq#q-palps) - [InPlay or PreMatch arbing: which should I choose?](https://www.oddstorm.com/help/faq#q-liveprematch) - [How do I avoid getting limited by bookmakers?](https://www.oddstorm.com/help/faq#q-limitation) - [Do I owe taxes on arbitrage profit?](https://www.oddstorm.com/help/faq#q-taxes) ### Plans and billing - [What is the difference between Pro and Elite?](https://www.oddstorm.com/help/faq#q-proelite) - [What plans are available?](https://www.oddstorm.com/help/faq#q-available) - [How much does it cost?](https://www.oddstorm.com/help/faq#q-cost) - [Which payment methods do you accept?](https://www.oddstorm.com/help/faq#q-payment) - [Do subscriptions renew automatically?](https://www.oddstorm.com/help/faq#q-renew) - [What happens if I buy a second subscription?](https://www.oddstorm.com/help/faq#q-stack) - [Can I get a refund?](https://www.oddstorm.com/help/faq#q-refund) - [Can I pause my subscription?](https://www.oddstorm.com/help/faq#q-pause) - [Can I transfer my subscription to someone else?](https://www.oddstorm.com/help/faq#q-transfer) - [Why do I see profits capped at 0.50% and hidden names?](https://www.oddstorm.com/help/faq#q-cap) - [I have a plan. Why are names hidden on the PreMatch or InPlay pages?](https://www.oddstorm.com/help/faq#q-oneproduct) - [How do I delete my account?](https://www.oddstorm.com/help/faq#q-deleteaccount) ### Using OddStorm - [Which bookmakers do you support?](https://www.oddstorm.com/help/faq#q-bookmakers) - [How fast does OddStorm find surebets?](https://www.oddstorm.com/help/faq#q-speed) - [Can I filter by market or period (1X2, Over/Under, corners)?](https://www.oddstorm.com/help/faq#q-markets) - [What is Navigation?](https://www.oddstorm.com/help/faq#q-navigation) - [How do I access Back/Lay surebets?](https://www.oddstorm.com/help/faq#q-backlay) - [What does a red arbitrage mean?](https://www.oddstorm.com/help/faq#q-colors) - [Do you offer value bets?](https://www.oddstorm.com/help/faq#q-valuebets) ### Troubleshooting - [The odds do not match my bookmaker. What should I send you?](https://www.oddstorm.com/help/faq#q-wrongodds) - [Another service shows a surebet that OddStorm doesn't. Why?](https://www.oddstorm.com/help/faq#q-missingarb) - [I have a plan, but my surebet list in the web app is empty. Why?](https://www.oddstorm.com/help/faq#q-emptylist) - [The desktop app won't sign in or shows no bookmakers. What can I do?](https://www.oddstorm.com/help/faq#q-desktopapp) - [A bookmaker stopped updating. Is it down?](https://www.oddstorm.com/help/faq#q-bookiedown) - [Which bookmakers are legal in my country?](https://www.oddstorm.com/help/faq#q-licensing) - [Do you support brokers (BetInAsia, MollyBet)?](https://www.oddstorm.com/help/faq#q-brokers) - [Do you offer an odds API?](https://www.oddstorm.com/help/faq#q-api) ## Guides - [What is sports arbitrage?](https://www.oddstorm.com/guides/what-is-sports-arbitrage): Sports arbitrage (a surebet, or arb) is betting on every possible outcome of one match at different bookmakers whose odds disagree, so that - [How much money do I need?](https://www.oddstorm.com/guides/how-much-money-do-i-need): You can learn arbitrage with a few hundred euro, but the arithmetic starts paying for the time you spend from roughly EUR 1,000 to 2,000 spr - [How many bookmaker accounts do I need?](https://www.oddstorm.com/guides/how-many-bookmakers): Around ten is the practical starting point: enough that arbs regularly appear between books you actually hold, few enough to manage deposits - [How much can you realistically earn?](https://www.oddstorm.com/guides/realistic-profit): Active arbers commonly target 10 to 20 percent of their bankroll per month. Not per bet, not guaranteed, and not passive: the number comes f - [Is arbitrage betting legal?](https://www.oddstorm.com/guides/is-arbitrage-betting-legal): Yes. Arbitrage betting is placing ordinary bets at odds the bookmakers themselves published. No law anywhere forbids betting on all outcomes - [The beginner mistakes that actually cost money](https://www.oddstorm.com/guides/beginner-mistakes): Arbitrage cannot lose once both legs are placed correctly, so every beginner loss is a process mistake. The good news: the list of process m - [The arbitrage action plan](https://www.oddstorm.com/guides/arbitrage-action-plan): From zero to your first settled arb in eight steps and about two weeks. Nothing here is theory: this is the exact sequence we would follow o - [Two-way and three-way surebets](https://www.oddstorm.com/guides/two-way-and-three-way-surebets): A two-way surebet covers a match with two bets whose outcomes cannot both lose (Over vs Under, home win vs 'draw or away'). A three-way sure - [Middles: the arbs where both bets can win](https://www.oddstorm.com/guides/middles): A middle is built like a surebet, but the two legs leave a gap between them: results inside the gap win BOTH bets at once. You pay a small g - [Polish middles: betting against the gap](https://www.oddstorm.com/guides/polish-middles): A Polish middle is a middle turned inside out: the two legs pay a locked profit on EVERY result except one narrow gap, where you take a know - [Asian handicap, the arber's workhorse](https://www.oddstorm.com/guides/asian-handicap): An Asian handicap (AH) gives one team a virtual head start, turning a three-outcome football match into a two-outcome bet. For arbers AH is - [Moneyline and draw no bet](https://www.oddstorm.com/guides/moneyline-and-draw-no-bet): Moneyline is the plain 'who wins' bet: two outcomes in sports without draws, and in football usually offered as draw no bet (DNB), where a d - [Three-way (European) handicap](https://www.oddstorm.com/guides/three-way-handicap): A European handicap (EH) applies a whole-goal head start like AH does, but keeps three outcomes: the favorite covers, the underdog covers, o - [Back/Lay surebets](https://www.oddstorm.com/guides/back-lay-surebets): A Back/Lay surebet pairs a normal bet at a bookmaker (the back: it WILL happen) with the opposite position at a betting exchange like Betfai - [Why surebets exist (and vanish)](https://www.oddstorm.com/guides/why-surebets-exist): A surebet is a temporary disagreement between bookmakers, and bookmakers disagree constantly because each prices matches with its own models - [The arber's glossary](https://www.oddstorm.com/guides/betting-glossary): Every term and abbreviation you will meet in OddStorm, at bookmakers and in these guides, defined in one line each. Bookmark this page; the - [Avoiding bookmaker limits](https://www.oddstorm.com/guides/avoid-bookmaker-limits): Soft bookmakers limit accounts that look professional. You cannot make an account unlimitable, but you decide how loudly your betting announ - [Palpable errors and cancellations](https://www.oddstorm.com/guides/palpable-errors-and-cancellations): A palpable error (palp) is a price so obviously wrong that bookmaker terms allow the bet to be voided or resettled at corrected odds. For an - [Account verification without the pain](https://www.oddstorm.com/guides/bookmaker-verification-kyc): Every bookmaker will verify your identity (KYC), and by default it happens at the worst moment: when you first try to withdraw, freezing you - [E-wallets: the arber's money hub](https://www.oddstorm.com/guides/e-wallets-for-arbers): Arbitrage means money parked at many bookmakers that constantly unbalances: winners grow fat while losers run dry. An e-wallet (Skrill and N - [VPN and account security](https://www.oddstorm.com/guides/vpn-and-account-security): A VPN is a security tool, and arbers with money spread across a dozen gambling accounts need security more than most. What a VPN is NOT is a - [Settlement rules: the same bet that isn't](https://www.oddstorm.com/guides/settlement-rule-differences): An arbitrage covers every outcome only if both legs settle on the SAME definition of the outcome. Two bookmakers can call a market by the sa - [Soft and sharp bookmakers](https://www.oddstorm.com/guides/soft-vs-sharp-bookmakers): Soft bookmakers are the recreational brands: slower odds, bigger margins, quick to limit winners. Sharp bookmakers price with thin margins, - [Clone bookmakers](https://www.oddstorm.com/guides/clone-bookmakers): Many bookmaker brands are the same product underneath: one platform, one odds feed, many storefronts. These clones matter to arbers twice: a - [InPlay arbing](https://www.oddstorm.com/guides/inplay-arbing): InPlay is where arbitrage pays best: live odds move every second, so disagreements are bigger and more frequent than PreMatch. It is also wh - [The best time to arb](https://www.oddstorm.com/guides/best-time-to-arb): If your hours are limited, spend them where the fixtures are: Saturday first, Sunday second, and within any day, the hours around kickoffs a - [Bonus hunting](https://www.oddstorm.com/guides/bonus-hunting): Nearly every bookmaker pays new customers a deposit bonus, and arbitrage is the cleanest machine for converting those bonuses into withdrawa - [Getting started with OddStorm](https://www.oddstorm.com/guides/getting-started-with-oddstorm): OddStorm runs in your browser: create a free account, open the PreMatch or InPlay feed, and live surebets start flowing with the stakes alre - [Filters and presets in the web app](https://www.oddstorm.com/guides/web-app-filters-and-presets): The sidebar on every tool page decides which surebets reach your screen: the bookmakers you hold, the markets and periods you hide, the exch - [The OddStorm desktop app](https://www.oddstorm.com/guides/oddstorm-desktop-app): The web app covers the full surebet feed in any browser, with bookmaker, market and period filters; the desktop app is the Windows client fo - [Surebet Navigation](https://www.oddstorm.com/guides/surebet-navigation): Navigation is the Elite feature of the desktop app: one click on an arb's leg opens the bookmaker's site and navigates straight to that even - [Reading the calculator](https://www.oddstorm.com/guides/reading-the-calculator): The calculator is where an arb becomes actual bets: type the stake for one leg and it works out the others, so every outcome returns the sam - [Payments and subscriptions](https://www.oddstorm.com/guides/payments-and-subscriptions): An OddStorm plan is three choices: a tier (Pro, or Elite which adds Navigation), a product (PreMatch, InPlay, or both) and a duration (1, 6 - [Your OddStorm account](https://www.oddstorm.com/guides/your-oddstorm-account): Your plan, your payments and your settings each have a page in your oddstorm.com account. This tour shows what every page is for and the one - [Reporting wrong odds](https://www.oddstorm.com/guides/reporting-wrong-odds): Sometimes the odds at your bookmaker do not match what OddStorm shows. Usually the explanation is timing or a clone domain; occasionally it ## Company - [About OddStorm](https://www.oddstorm.com/about): Company and contact information - [News](https://www.oddstorm.com/news): Product milestones since 2007 - [Contact](https://www.oddstorm.com/contact): Support contact form ## Optional - [Terms of service](https://www.oddstorm.com/terms) - [Privacy policy](https://www.oddstorm.com/privacy) - [Recommended sites](https://www.oddstorm.com/recommended)