# OddStorm > URL: https://www.oddstorm.com/ > Index: https://www.oddstorm.com/llms.txt > 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 2026-10-28 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, Back/Lay surebets, middles, odds comparison and the calculator. The desktop app is Windows only and adds Navigation, the feature that needs deeper integration. (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 (on a phone, in the bar at the bottom) 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), 29 working right now (27 InPlay, 21 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. ## Read - [Guides](https://www.oddstorm.com/guides.md): arbitrage betting from zero, the mechanics, the craft, the product - [FAQ](https://www.oddstorm.com/help/faq.md): plans, billing, bookmakers, the apps ## 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 ## 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