Free sports betting odds comparison across 19 sportsbooks and 4 exchanges (Kalshi, Polymarket, ProphetX, Novig). The Odds Gap shows every book's price side by side and flags the best number, pregame and live in-play, so the same bet pays more. Tools include an 8-mode hedge finder (free bet conversion, boosts, futures, arb scan), DFS pick'em grading, a middle finder, a bet tracker with automatic CLV, 11 calculators, and a daily best-gaps email. Nothing is paywalled; a free email unlocks the 60-second live tier. A free alternative to paid tools like OddsJam.
Free to use
The Odds Gap offers its core betting comparison and value-finding tools without a subscription fee, making it accessible for casual bettors who want to check odds discrepancies without extra cost.
Odds comparison across bookmakers
The site aggregates odds from multiple bookmakers, allowing users to quickly identify the best available price for a given bet, which can improve long-term betting value.
Focus on value betting and arbitrage
The platform is geared toward helping users find mispriced odds and arbitrage opportunities, appealing to more analytical or advantage-seeking bettors rather than just casual punters.
Educational content
The Odds Gap provides guides and articles explaining concepts like value betting, arbitrage, and bankroll management, which can help newer users understand more advanced betting strategies.
Simple, functional interface
The website layout tends to be straightforward, presenting odds and comparisons in a clear format that doesn't overwhelm users with unnecessary clutter.
Promote The Odds Gap. You can add any of these badges on your website.
Many odds tools paywall the comparison, skip the newer prediction-market exchanges, or make money selling picks. The Odds Gap keeps the core comparison free forever, includes the exchanges with their fees baked into the displayed price, and never sells picks. You get the whole stack in one place: line shopping, +EV plays graded on a public record against the de-vigged Pinnacle line, hedging and arbitrage, DFS pick'em grading, and a tracker that captures your closing line value automatically. One free email unlocks the live 60-second in-play board. If you want honest numbers and tools instead of tips behind a paywall, that is the fit.
US sports bettors who care about getting the best number: line shoppers, value and +EV bettors, hedgers and arbers, DFS pick'em players, and anyone curious about the new prediction-market exchanges. It spans casual bettors who just want the best price on tonight's game and sharper users who track closing line value and hunt arbitrage. It is US-focused and mobile-first (installable as an app), with an active community on X.
One flag here: The Odds Gap is a free consumer tool, so it has no named enterprise customers, and I didn't want to invent any. If you want to fill the field honestly, I'd list user groups rather than company names:
The Odds Gap was built by a solo founder in Michigan who got tired of paying -110 at his sportsbook for bets an exchange was quietly pricing better, and realized almost nobody line shops because checking 19 books and 4 exchanges by hand is miserable. So he built the thing that checks, with every exchange fee baked in and the best price flagged automatically. It has grown into a full free toolkit, built in public, on one principle: math, not picks. The site never tells you what to bet, only where the same bet pays more.
A Python (Flask) backend with a SQLite datastore, deployed on Railway with continuous deploys from GitHub. The front end is server-rendered HTML with vanilla JavaScript, shipped as an installable PWA with push notifications. Live odds come from The Odds API plus direct exchange APIs (Kalshi, Polymarket, ProphetX, and Novig). Supporting pieces include a Python Discord bot, transactional email, Google Analytics 4, and a Capacitor-based iOS build.
The Odds Gap is a free line-shopping tool that treats sportsbooks and prediction-market exchanges as one market. It compares live prices across 19 sportsbooks and 4 exchanges (Kalshi, Polymarket, ProphetX, and Novig) on every moneyline, spread, total, and player prop, and flags the best number with each exchange's trading fee already baked into the price you see, so you are comparing what you would actually get rather than a raw quote. It is math, not picks: no touts and no premium tips, just where the same bet pays the most, backed by a full toolkit (hedge finder, arbitrage and middle scanners, DFS grading, a bet tracker with automatic closing line value, a profit-boost wallet, and 11 calculators). The comparison board is free forever with no account.
The Odds Gap appears to be a sports betting/odds comparison resource that can be useful for bettors looking to compare bookmaker odds and find value bets, though as with any betting-related site, users should verify current data accuracy and independently confirm bookmaker legitimacy and licensing before wagering.
We have collected here some useful links to help you find out if The Odds Gap is good.
Check the traffic stats of The Odds Gap 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 The Odds Gap 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 The Odds Gap'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 The Odds Gap 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 The Odds Gap on Reddit. This can help you find out how popualr the product is and what people think about it.
Do you know an article comparing The Odds Gap to other products?
Suggest a link to a post with product alternatives.
Is The Odds Gap good? This is an informative page that will help you find out. Moreover, you can review and discuss The Odds Gap 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.