Free Odds Comparison Extension for Line Shoppers
Stop switching tabs. OddsGuard overlays real-time prices from 75+ sportsbooks directly on the page you’re already on.
See +EV alerts, find better lines, save money — automatically.
BETTER ODDS.
RIGHT WHERE YOU BET.
OddsGuard works best in Extension mode — enable it once and we'll overlay the best price across 75+ sportsbooks on every page.
EVERY PRICE,
CHECKED IN REAL-TIME.
Once the extension is on, OddsGuard stamps a live savings badge on every odds button — you'll see better prices before you tap.
MAXIMIZE
YOUR PARLAYS.
Don't leave money on the table — we scan every major sportsbook in real-time and route your parlay to the book paying out the most.
NEVER MISS
A BONUS.
One feed for every signup boost, deposit match, and reload offer across the books — claim them before they expire.
MAXIMIZE YOUR
EDGE.
Install the extension and complete every step to unlock the full OddsGuard experience.
Solutions
Built for how you use odds
Line shoppers, streamers and publishers get different surfaces on the same feed. Pick the one that matches what you are doing.
For line shoppers
You already have an account at a sportsbook. These put the rest of the market next to the price it is showing you, on whatever you bet from.
Explore line shoppers tools →For streamers
You are on air and your viewers are asking what the price is. This puts it on the layout you already built, without a second monitor.
Explore streamers tools →For publishers and site owners
You run a site that covers sport. These give your pages live prices to show, and a reason for a reader to come back to them.
Explore publishers tools →
Why Pay More for Less?
Stop Paying for Data. Start Shopping the Edge.
The days of paying $600 a month for clunky dashboards are over. Open your favorite sportsbook, spot the mathematical edge highlighted right on your screen, and lock in your bet before the line moves.
The Old Way
Paid odds tools & manual line shopping
The OddsGuard Way
Automated, real-time, on your screen
- Free — no subscription, no hidden fees
- Odds overlaid directly on your sportsbook
- +EV alerts highlighted in real time
- Lock in bets before the line moves
- Works silently in the background
You no longer have to frantically refresh tabs or cross-reference screens just to find closing line value. OddsGuard gives you the sharpest insights without the heavy lifting — and without the monthly bill.
Browser extension and desktop app
Integrated With 44+ Sportsbooks
OddsGuard works directly inside the sportsbooks you already use. No extra tabs, no manual lookups — just smarter line shopping.
Also Live on Odds-Comparison Sites
Compare Against 3 Aggregators
OddsGuard also overlays on Oddschecker, OddsShark, and VegasInsider — so you can spot the better price right where you already compare lines.
Price Comparison Engine
We Compare Odds From 81 Bookmakers
Every price is checked across dozens of sportsbooks in real time so you never leave value on the table.
See How OddsGuard Works
Our browser extension shows you when better odds are available at other sports providers right on the pricing page. Click through the tabs to see it in action.
Detecting your location…
Detecting your location…
No download needed
Compare prices without installing anything
The same licensed bookmakers, on the site. Come back for the overlay when you are ready.
- Browse live odds →
Every price we carry, filtered to the books licensed where you are.
- Free betting calculators →
Parlay, arb, EV and more — no account, no install.
On your phone
iPhone, iPad & Mac App
A free app with the odds board, player props and every calculator built in, plus the Safari extension that puts the same overlay on the sportsbook sites you open on your phone. One download covers iPhone, iPad and Mac.
Prefer the desktop overlay? See how the overlay works
What line shoppers are saying
Join 1,000s of Smarter Line Shoppers
14 5-star reviews from line shoppers using OddsGuard today.
Never Miss a Bonus Again
Every active promo from every sportsbook — deposit bonuses, free bets, odds boosts — organized in one tab inside OddsGuard. Geo-filtered to your state. Updated in real time.
Consumer Price Protection Tools
OddsGuard provides everything you need to make informed decisions and save time and money.
Real-time Price Comparison
Compare prices across major providers in real-time to find the best value for your selections.
Privacy First
Extension only loads on supported sports platform websites, so you don't have to worry about your data being shared with third parties.
75+ Provider Coverage
Automatically find and compare the best prices across 75 major providers so you don't overpay.
Secure & Anonymous
No registration required. Stay in control and keep your data anonymous.
Works in Background
OddsGuard runs silently in your browser, automatically detecting relevant sites and prices without disrupting your browsing.
Customizable Preferences
Set your minimum savings thresholds for when to show better pricing. Show 👍 icon when the best prices are found.
Geolocated to Your Market
OddsGuard is geolocated to your market, so you only see prices for providers that are available in your region.
Price Converter
Instantly convert between decimal, fractional, and American price formats with a single click.
Compatible with All Major Browsers
Free to use. No registration required.
Questions about our solutions
Stop Leaving Money on the Table
Same Bets. Better Prices. Found Instantly.
The same 4-leg parlay can pay $10,000s more at a different sportsbook. OddsGuard finds the best price across 75 books in real time — replacing tools that charge $200–$600/month.
Best Pricing in Your Region