Free Odds Comparison Extension for Line Shopping
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.
Why Pay More for Less?
Stop Paying for Data. Start Betting the Edge.
The days of paying $200 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
- Pay $50–$200/month for clunky dashboards
- Frantically refresh tabs and cross-reference screens
- Copy odds manually between sites
- Miss closing line value while switching apps
- Need a second monitor just to keep up
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.
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.
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What Bettors Are Saying
Join Thousands of Smarter Bettors
Real feedback from bettors who stopped overpaying and started finding the best lines automatically.
“It's not just moneylines. Spreads, totals, outrights — it compares everything. I found +3.5 at -105 on one book vs -115 on mine. Those adds up fast.”
Nicole F.
All-markets bettor
“I love that it doesn't track me. No login, no data harvesting. It asks before collecting anything. First tool I've used that actually respects privacy.”
Ryan S.
Privacy-conscious bettor
“When the book I'm on already has the best price, it shows a thumbs up. No noise, no unnecessary alerts. It only bugs me when there's real money to save.”
Megan D.
Weekend bettor
“I open DraftKings and OddsGuard instantly shows me better prices from other books right above each bet. It's like having X-ray vision for odds.”
Marcus T.
NFL & NBA bettor
“I was paying $400/month for OddsJam. OddsGuard does the same thing for free, directly on the page I'm already on. I cancelled the same day.”
Jake R.
Former OddsJam subscriber
“The bonus tab is a goldmine. Every promo from every book, organized in one place. I grabbed 3 deposit bonuses I had no idea existed.”
Priya K.
Promo hunter
“It does parlays. I compared a 4-leg parlay across sites and the payout difference was over $1,200. On the SAME picks. That's insane.”
Devon W.
Parlay bettor
“There's literally no catch. No subscription, no credit card, no account. It just works. I keep waiting for the paywall and it never comes.”
Sarah M.
Casual bettor
“I bet on my phone through Firefox on Android and it works perfectly. I get the overlays right in the mobile browser. No other tool does this.”
Tyrell J.
Mobile bettor
“Fastest way to shop odds, period. I used to open 6 tabs and compare manually. Now I open one sportsbook and see everything. It's a 2-second decision.”
Chris L.
Daily sports bettor
“The EV calculations changed everything for me. I can see exactly which bets have a mathematical edge. My win rate is up significantly since I started using it.”
Alex P.
Sharp bettor
“The savings badges are addictive. I see a green “+$14” badge on a moneyline and I know instantly I’m leaving money on the table if I don’t switch. It makes every bet smarter.”
Brandon H.
MLB bettor
“It's not just moneylines. Spreads, totals, outrights — it compares everything. I found +3.5 at -105 on one book vs -115 on mine. Those adds up fast.”
Nicole F.
All-markets bettor
“I love that it doesn't track me. No login, no data harvesting. It asks before collecting anything. First tool I've used that actually respects privacy.”
Ryan S.
Privacy-conscious bettor
“When the book I'm on already has the best price, it shows a thumbs up. No noise, no unnecessary alerts. It only bugs me when there's real money to save.”
Megan D.
Weekend bettor
“I open DraftKings and OddsGuard instantly shows me better prices from other books right above each bet. It's like having X-ray vision for odds.”
Marcus T.
NFL & NBA bettor
“I was paying $400/month for OddsJam. OddsGuard does the same thing for free, directly on the page I'm already on. I cancelled the same day.”
Jake R.
Former OddsJam subscriber
“The bonus tab is a goldmine. Every promo from every book, organized in one place. I grabbed 3 deposit bonuses I had no idea existed.”
Priya K.
Promo hunter
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.
50+ Major Providers
Automatically find and compare the best prices across 50+ 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.
Works with Most Major Providers
Compatible with All Major Browsers
Free to use. No registration required.
Stop Leaving Money on the Table.
It takes 10 seconds to install and costs nothing. Join the sharpest betting community today.
Free forever • No registration required • No credit card • Uninstall anytime