Real-Time Sports Betting Odds Comparison

OddsGuard is a free, real-time sports odds comparison service. Whenever you’re looking at a market on a supported sportsbook, we show you the same selection’s price across our feed of 75+ price sources — so you can spot the best price (and the best promotions) side by side, before you bet.

• We don’t take bets — those are placed on the sportsbook of your choice, on their site, under their terms.
• We don’t hold money — your balance lives at the sportsbook, not with us.
• We never log in to your account — we only read the odds that are already visible on the page.

If you want to see it in action, the interactive demo walks through a real sportsbook layout with the overlay running.

Three steps, all of them automatic:

1. Read the page. When you visit a supported sportsbook, OddsGuard reads the odds you’re already looking at — the same numbers any logged-out visitor can see.
2. Compare. We cross-check that selection against our live feed of 75+ other price sources for the exact same market.
3. Show you the better price. If we find one, a small overlay appears right next to the original odds with the difference and a one-tap link to the cheaper book.

No sportsbook login, no balance access, no bet placement. Read the full privacy policy for what we do and don’t collect.

Yes. Every product surface is free to install and use:

• The browser extension (Firefox and Safari)
• The OddsGuard app for iPhone, iPad, and Mac (the Safari extension and a built-in odds browser)
• The Windows desktop app — required for Chrome, Microsoft Edge, Brave, Opera, or Vivaldi users (see “Why no Chrome extension?” below)
• The embeddable widget for site owners

Odds comparison across 75+ price sources, bonus discovery, basic notifications, and the on-page overlay are all included at no cost.

OddsGuard runs across most of the places people browse and bet today:

• Browser extension — for Firefoxand Safari (iPhone / iPad / Mac).
• Windows desktop app — a self-contained app that runs alongside any Windows browser. This is the official way to use OddsGuard on Chrome, Microsoft Edge, Brave, Opera, or Vivaldi. Install guide.
• Native iPhone / iPad / Mac app — pulls live odds from our feed in a built-in browser tab and powers the Safari extension on Apple devices.
• Free embeddable widget — for sports sites, blogs, and tipsters who want live prices on their own pages. Widget docs.

Not sure which one to install? Open our home page from the device you bet on — we automatically suggest the right install for your browser and OS.

Two answers, because the two numbers are different:

• Extension overlay: The browser / Safari extension’s on-page overlay activates on 40 specific sportsbook sites today — those are the pages where OddsGuard reads the odds you’re looking at and injects a comparison right next to them. See the full list with logos in Supported Sportsbooks.
• Price comparison feed: The prices we compare those odds against come from a broader feed of 75+ sources, including major US books (DraftKings, FanDuel, BetMGM, Caesars, BetRivers, ESPN Bet, Bovada, BetOnline), UK / European books (Bet365, William Hill, Betfair, Paddy Power, Ladbrokes, Coral, Sky Bet, Betfred, BoyleSports, Unibet, 888sport, LeoVegas, Casumo, Betsson, BetVictor, Betway, Grosvenor, and more), and exchanges / sharp books (Pinnacle, Smarkets, Novig, ProphetX, Kalshi). See the full list with logos in Comparison Sources.

Wondering which books are available where you live? See the Odds by Country directory in the footer.

OddsGuard covers the major sports worldwide:

• Basketball — NBA, NCAAB.
• American Football — NFL, NCAAF.
• Baseball — MLB.
• Ice Hockey — NHL.
• Soccer — Premier League, La Liga, Bundesliga, Champions League, MLS.
• Tennis — ATP & WTA.
• Combat — UFC.
• Golf — PGA Tour.
• Cricket — IPL & T20.
• Rugby — Six Nations.
• Motorsport — Formula 1.
• Darts — PDC.
• Plus 100+ other leagues — long-tail soccer competitions, Aussie Rules, Lacrosse, Snooker, Cycling, and more.

The exact leagues active each day are shown in the app and on the website’s Odds section.