Linewhale
Real-time odds comparison across 100+ sportsbooks in 8 regions. Find the best line on every bet you place.
A startup from San Diego, the United States.
Real-time odds comparison across 100+ sportsbooks in 8 regions. Find the best line on every bet you place.
A startup from San Diego, the United States.
This page is designed to help you find out whether Linewhale is good and if it is the right choice for you.
Linewhale is an independent odds comparison and betting analytics platform built for bettors who want the best price on every wager. It pulls real-time lines from major sportsbooks like DraftKings, FanDuel, BetMGM and Caesars, plus prediction markets like Kalshi and Polymarket, and shows you at a glance which book has the best number.
Coverage includes the NFL, NBA, MLB, NHL, UFC/MMA, EPL and MLS, with moneyline, spread and total markets updated throughout the day.
Free, no account needed: - Live odds comparison across sportsbooks, with the best line highlighted - Line movement charts for every event, per sportsbook - Odds converter, parlay calculator, hedging calculator and arbitrage calculator - Sportsbook rankings
Free with an account: - Line History: 30 days of multi-sportsbook line movement for any event - Favorite teams and events - Hide the sportsbooks you don't use so you only see odds you can actually bet
Premium tools for sharper bettors: - Arbitrage Finder: spots price gaps between books that guarantee a profit regardless of outcome - Positive EV Finder: compares each line against a de-vigged market consensus to surface bets priced in your favor - Middle Finder: finds spread and total gaps where both sides of a bet can win - Steam Moves: flags sharp, synchronized line moves across books as they happen
Linewhale is built for recreational bettors learning to line shop, and for advantage bettors who need fast, reliable data without paying hundreds a month. Premium is $25/month or $20/month billed annually, and the core odds comparison is free.
Linewhale is not a sportsbook and does not take bets. It's a data and tools platform that helps you find the best price before you place a bet wherever you already play.
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Odds Comparison
Compare real-time lines from major sportsbooks and prediction markets side by side, with the best available price highlighted.
Prediction Market Odds
See Kalshi, Polymarket, and other major prediction market's prices next to traditional sportsbook lines to spot where they disagree.
Line Movement Charts
Track how each sportsbook's line has moved on any event so you can see where the market is heading.
Line History
Review 30 days of line movement across every sportsbook for any event, filterable by sport.
Odds Converter
Instantly convert between American, decimal and fractional odds, and see the implied probability.
Parlay Calculator
Calculate the combined odds and potential payout of any multi-leg parlay.
Hedging Calculator
Work out exactly how much to bet on the other side to lock in profit or cut your losses.
Arbitrage Calculator
Enter two opposing prices to see the stakes that guarantee a profit no matter the outcome.
Sportsbook Rankings
Compare sportsbooks by how often they offer the best price, so you know which accounts are worth having.
Favorites
Save the teams and events you follow so their odds are always one click away.
Arbitrage Finder
Automatically scans every sportsbook for price gaps that guarantee a profit regardless of the result.
Positive EV Finder
Compares each line to a no-vig market consensus to surface bets priced in your favor.
Middle Finder
Finds spread and total gaps between books where both sides of your bet can win.
Steam Moves
Flags sharp, sudden line moves across multiple sportsbooks as they happen.
Linewhale puts sportsbook odds and prediction-market prices (Kalshi and Polymarket) on the same screen, so you can see where they disagree. Most odds tools only cover sportsbooks. Linewhale also gives away a lot without a paywall: live odds comparison, line movement charts, and a full set of betting calculators are free with no account. Only the advanced finders (arbitrage, positive EV, middles and steam moves) are behind premium.
We also are the only odds comparison that shows you positive EV territory per betting market all for free.
Price and simplicity. Competitors like OddsJam and Unabated are powerful, but their premium plans can cost well over $100 a month. Linewhale's Arbitrage Finder, Positive EV Finder, Middle Finder and Steam Moves cost $25/month, or $20/month billed annually. The interface is built to be fast and clean, so a newer bettor can learn to shop for the best line without feeling overwhelmed. Linewhale is independent and isn't owned by a sportsbook. We also provide tons of free resources where at a glance you can get a good betting edge all for free.
Two groups. The first is recreational bettors who want to stop leaving money on the table by checking every book for the best price before they bet. The second is advantage bettors (people hunting arbitrage, positive-EV and middle opportunities) who need fast, reliable data without paying enterprise-level prices. Most users bet on the NFL, NBA, MLB, NHL and UFC across several sportsbook accounts.
Linewhale started because I was betting across several sportsbooks and got tired of opening five apps to find the best line / the existing tools were too expensive for what I needed. I built the first version to compare odds for myself, then added the calculators and finders I wished existed. It's built and run independently, with no sportsbook ownership, and every dollar of revenue goes back into making the product better.
Next.js and Node.js
Linewhale is used by thousands of individual bettors every month, from casual bettors learning to line shop to advantage bettors running arbitrage and +EV strategies. We host odds from large name bookmakers and exchanges like: - Kalshi - Polymarket - Novig - Draftkings - Fanduel - BetMGM - Pinnacle - Smarkets - Matchbook - ESPN Bet - Caesars - Fanatics and many many more
We have collected here some useful links to help you find out if Linewhale is good.
Check the traffic stats of Linewhale on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of Linewhale on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of Linewhale's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of Linewhale on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about Linewhale on Reddit. This can help you find out how popualr the product is and what people think about it.
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Is Linewhale good? This is an informative page that will help you find out. Moreover, you can review and discuss Linewhale here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.
