Best Prediction Market Apps: Rated and Reviewed for September 2026

Polymarket and Kalshi are the two strongest all-around apps we tested, but they don't feel the same once you start using them. Polymarket is easier to pick up as a new trader, while Kalshi gives you more depth and a stronger App Store and Google Play track record.

Why We Rank Polymarket First

Polymarket is our top pick for the overall app experience. Of the apps we tested, it was the easiest to learn and required the least explanation before placing a first trade.

Markets are easy to find, the order flow is simple, and your positions and live profit or loss are visible without going through several menus. There's also less exchange terminology to work through than on Kalshi, which helps if prediction markets are new to you.

Plus, that simpler experience doesn't come at the expense of market selection. Polymarket has 17 categories covering sports, politics, crypto, economics, tech, culture, weather and other current events, giving it the broadest range among the apps we compared.

Its store ratings are more mixed, though. Polymarket has a 4.6/5 rating on the App Store but a 3.5/5 rating on Google Play. We take those scores into account, but our ranking also reflects our own testing of the current apps rather than relying on store reviews alone.

Where Kalshi Stands Out

Kalshi asks a little more from a first-time trader, but there's more to work with once you know your way around the app.

Its market structure is denser, there are more order options, and fees are shown more explicitly throughout the trading process. That can make the first few trades feel less straightforward than they do on Polymarket, but experienced users may prefer having those controls available.

Kalshi also has the strongest store ratings of the two. It holds a 4.8/5 rating from about 455,000 App Store reviews and a 4.7/5 rating from roughly 97,000 Google Play reviews. Its order books are also the deepest overall among the apps we compared, particularly across sports markets.

For someone opening a prediction market app for the first time, we'd start with Polymarket. Kalshi makes more sense if you want a denser trading interface, deeper books and more control over how your orders are placed.

A prediction market app is a downloadable exchange. Instead of taking a price from a bookmaker you buy and sell contracts on an outcome against other users, priced in cents from 0 to 100, where the price is the market's estimate of the probability. A contract at 58¢ is the market saying 58%, and it settles at $1 if the event happens or $0 if it does not, so you risk 58¢ to win 42¢.

The app differs from the website in timing rather than substance. The same order book sits behind both. What the app adds is availability: it's with you when news breaks, when a line moves at kick-off, or when you decide at half-time that you want out. Trading from a phone or tablet at any hour is the reason these apps exist, and Face ID log-ins, Apple Pay and instant bank funding, push alerts on settlement and a one-thumb order ticket all follow from it.

Desktop and web still win the slower work: reading a full order book, comparing several markets side by side, running your own numbers against open positions, or scrolling long resolution criteria before you commit. Most people use both, with the web for research and the app for trading. Polymarket closes that gap best, because its mobile build was designed as the product in its own right, and it asks the least of a first-time trader.

Because the market is peer to peer there's no house line to beat and no account limits for winning too often. The real choice is between the app that makes trading easiest on a phone and the book with enough activity sitting behind the price.

We compare prediction market apps across four areas: regional availability, user experience, market range and activity around the displayed price. These matter more than a long feature list because they determine whether you can actually use the app, find the markets you want and trade them without unnecessary friction.

Before comparing features, check whether an app is actually available where you live. Prediction market coverage varies by operator, and access to sports contracts can be narrower than access to the rest of the platform.

ProphetX currently has the widest state coverage among the apps compared here. Polymarket and Kalshi are available across 41 states plus Washington, D.C., while Novig covers 28 states plus D.C.

FanDuel Predicts works a little differently. The app is available across all 50 states and D.C., but sports event contracts are currently limited to 18 states.

Among the 50 states and D.C., Washington is the only jurisdiction where none of the five apps in this comparison currently operate.

Availability can change, particularly as prediction market operators face different rules and legal challenges from state to state. Check the app's current terms before depositing or trying to claim a welcome offer.

A store rating can tell you how thousands of users feel about an app, but it can't tell you everything about actually trading on it. For this comparison, we use App Store and Google Play scores alongside our own testing of account setup, deposits, order entry, live markets, position management and withdrawals.

Polymarket came out ahead in our hands-on testing. It takes fewer steps to get from a market page to an open position, and the basic trading flow is easier to follow if you've never used an exchange before.

Kalshi gives you more control over how orders are placed and shows more trading information upfront. That's useful once you're comfortable with prediction markets, although it also makes the app denser when you're just getting started.

Store ratings tell a slightly different story:

App Store and Google Play ratings last checked September 19, 2026. Ratings and review counts can change.

Kalshi has by far the largest review sample of the group, and its scores are consistently strong across both operating systems. Polymarket is where the store data and our testing diverge most. Its iOS rating is strong, while its Android score trails the other leading apps. We factor that gap into our rating rather than letting either store reviews or our own testing decide the score by itself.

When we test an app, we also look at the practical stuff that's easy to miss in a feature list: how long it takes to create and fund an account, how many taps it takes to place a trade, what happens when prices are moving quickly, whether positions and live P&L are easy to find, how the app handles an exit, and what the withdrawal process looks like.

Market selection is where these apps start to separate pretty quickly.

Polymarket and Kalshi cover sports alongside politics, crypto, finance, economics, culture and other real-world events. FanDuel Predicts also reach beyond sports, while ProphetX and Novig are much more sports-focused.

If you want one app for both sports and non-sports events, Polymarket and Kalshi give you the broadest mix. Polymarket currently organizes its board across 17 categories, including politics, sports, crypto, finance, tech, culture and weather.

ProphetX and Novig take the opposite approach. Both concentrate on sports, with markets across major leagues, college sports, props, futures and live events rather than trying to cover every type of real-world outcome.

The category count is only part of the story, though. An app can list a niche market without having many users actively trading it. That's where market depth starts to make a difference.

A contract might show a price of 58¢, but that doesn't mean you can buy any amount you want at exactly 58¢.

Prediction markets use order books. If there are only enough sell orders at 58¢ to cover part of your trade, the rest may fill against orders at 59¢, 60¢ or higher. The larger the order, the more likely you are to move through several price levels on a thinner market.

That's slippage, and it's worth checking before placing a larger trade.

Here's an example:

In this example, there aren't enough contracts available at 58¢ to fill all 5,000. The rest of the order fills at higher prices, pushing the average cost to 59¢. One cent doesn't look like much on the order book, but across 5,000 contracts it adds another $50.

This matters much less when you're placing a small trade in a busy market. It becomes much more noticeable with larger orders or niche contracts where fewer users are sitting on either side of the book.

Kalshi has the deepest overall books among the apps we compared, particularly for sports, while Polymarket carries substantial activity across its larger non-sports markets as well. Either way, check the order book rather than relying only on the headline price, especially when you're trading a larger position.

Prediction markets work differently from sportsbooks because the operator isn't simply setting a house price and taking the other side of every trade. Your order is matched with other market participants willing to trade at that price.

That can include everyday users, professional market makers and traders using automated tools. You usually won't know exactly who is on the other side of a particular order, but what matters more is what those participants are doing in the order book.

The mix won't be the same in every market, even within the same app. A presidential election, an NFL game and a Bitcoin price contract can attract very different traders and very different amounts of liquidity.

That's another reason to judge the market you're trading, rather than assuming an app is equally deep everywhere. A platform can have a lot of overall activity while a specific contract still has a wide spread or very little size available.

Before placing an order, check the bid and ask prices and how much is available around them. That tells you a lot about the people currently willing to trade with you.

We scored each app out of 5 using the four criteria above: regional availability, app experience, market range and activity around the displayed price.

The app-experience score comes from our own testing rather than App Store or Google Play ratings alone. Store scores still matter, especially when thousands of users are flagging the same issue, but they're one part of the review.

If you're interested in learning more about their welcome bonuses specifically, check out this review of the best prediction market promos. 

Polymarket takes the top spot because it does the best job of making a prediction market feel approachable on a phone.

Finding a market, choosing a side and opening a position takes very little digging. Prices are easy to read as probabilities, open positions stay visible, and the app doesn't put much exchange terminology between you and the trade. Of the apps we tested, it was the easiest one to hand to somebody who had never bought an event contract before.

You also aren't giving up much range for that simplicity. Polymarket covers sports alongside politics, crypto, finance, economics, tech, culture, weather and other current events. Its U.S. product is mobile-only, so the app isn't a companion to the main experience. It is the main experience.

The weaker point is Android. User feedback there has trailed the iOS version, even as the score has improved over time. We found the current build usable in our testing, but the gap in store feedback is still worth considering if Android is your primary device.

Best for: Anyone opening a prediction market account for the first time, or anyone who wants sports and non-sports markets in one straightforward app.

Current offer: Use Polymarket promo code ACTION to Deposit $10, Get a $50 Trading Bonus!

If you're unsure how to use Polymarket, check out our How to Bet on Polymarket guide for a complete walkthrough.

Kalshi gives you more to work with than Polymarket, but it also expects you to learn a little more.

The app has deeper order controls, a denser market menu and more trading information on screen. Kalshi also uses explicit maker and taker fees when orders execute, so there's more to pay attention to before confirming a position.

That detail is useful once you're comfortable with how event contracts work. Sports markets are particularly deep, and Kalshi also carries a broad mix of politics, economics, crypto, finance, culture, weather and other categories.

Its store record is hard to ignore, too. Kalshi has hundreds of thousands of iOS ratings and well over 100,000 Google Play reviews while maintaining ratings above 4.5 on both platforms. That's a much larger feedback pool than the other apps here.

The trade-off is the learning curve. Polymarket gets you to a first trade faster. Kalshi gives you more control once you know why you want it.

Best for: Sports traders who care about market depth, or experienced users who want more control over how an order enters the book.

Current offer: Use the Kalshi promo code ACTION55 to Trade $25, Get $55!

How Trading Fees Compare

These apps don't all calculate trading costs the same way. Your cost can change with the contract price, whether you add or remove liquidity, whether the market is live and, on some platforms, whether you are trading a straight contract or a multi-leg position.

The number on the screen still isn't the whole cost of a trade. A narrow spread and enough contracts at your price can make just as much of a difference as the published fee schedule, especially if you plan to exit before settlement.

Novig stays is a sports-only prediction market covering major leagues, college sports, player props, futures, live markets and parlays.

Its "no-vig" positioning means that Novig doesn't build a sportsbook-style house margin into pregame straight markets, and those trades currently carry no trading fee for either makers or takers. Fees can still apply elsewhere, including eligible live trades and parlays, so "no vig" doesn't mean every possible trade is free, though.

That structure is one of Novig's strongest arguments if you mostly trade sports and pay close attention to price. The drawback is range. You won't find the politics, economics, crypto or culture markets available on broader exchanges, and liquidity can thin out once you move away from major games and popular markets.

The mobile experience is easy to follow, although the current Google Play score trails iOS and recent Android feedback includes complaints about freezing and performance. That's worth watching because this is a product where being able to enter or exit quickly matters.

There's also an important difference between platform and promo availability. Novig itself is live in 47 states, while the ACTION welcome offer is currently limited to 28 states plus D.C.

Best for: Sports traders who care about pregame pricing and don't need non-sports markets in the same app.

Current offer: Use the Novig promo code ACTION to Deposit $10, Get $25 in Trade Credits!

ProphetX doesn't try to cover every type of real-world event. Its focus is sports, and the menu goes considerably deeper there.

You can trade major pro and college leagues alongside player props, futures, live markets and parlays. The current app also exposes the order book, so you can see the available prices and how much size is sitting behind them before you submit a trade.

That makes ProphetX a better fit for somebody who already knows what they want to trade than for somebody looking for one app that also covers elections, crypto or economic releases.

The platform's reach is another advantage. ProphetX is currently available in 48 states plus D.C., giving sports-focused traders access in places where several broader prediction market apps still have restrictions.

Its iOS rating remains strong. Android feedback is more mixed and comes from a much smaller review sample, so I wouldn't read too much into the gap by itself, but it is still something we'd watch.

Best for: Traders who mainly care about sports, particularly player markets, live trading and multi-leg positions.

Current offer: Use the ProphetX promo code TANBONUS to Trade $50, Get $75!

FanDuel Predicts feels less like a traditional exchange terminal than Kalshi or ProphetX, which makes it easier to pick up if you're already comfortable with mainstream sports apps.

The market list also goes beyond sports. Depending on your location, you can find contracts tied to crypto, commodities, finance, macroeconomics, culture and politics alongside sporting events.

Availability needs a little explanation, though. FanDuel Predicts can operate across all 50 states and D.C., but that doesn't mean every user sees the same contracts. Sports event contracts are currently available in 18 states, and the welcome offer uses that same 18-state footprint.

So the app itself is widely available, while the product you get inside it depends heavily on where you're located. That's an important distinction if sports are the reason you're downloading it.

FanDuel also charges a 2% transaction fee based on the potential payout, and the fee is shown before you confirm the trade.

Best for: Users who want a polished, familiar interface and live in a state where the contracts they care about are available.

Current offer: No FanDuel Predicts promo code is required to Get $100 in Bonus When You Trade $1 for 5 Days!

The five apps ranked above are standalone prediction market products. You can also trade event contracts through apps built primarily for investing, fantasy sports, sports betting or crypto.

Robinhood offers event contracts alongside stocks, options and other investing products. It's convenient if you already have an account, but prediction markets are only one part of the app and the selection is narrower than on dedicated prediction market platforms.

Sleeper Markets and PrizePicks Predict bring Kalshi-powered sports contracts into existing DFS apps. They make sense for current users, but only cover part of Kalshi's board and focus heavily on sports.

Betr and Fanatics Markets use more known sports-style interfaces, which can be easier to pick up than a traditional exchange. You get less visibility into the underlying order book, though.

Coinbase and OG.com approach prediction markets from the crypto side, making them a better fit for users already comfortable with digital assets and stablecoins.

More brands are expected to enter the category, including bet365, BetMGM and Caesars. For now, the five apps ranked above are the ones we evaluate as standalone prediction market apps.

The simplest app of the five to learn, the widest board in the US, built for mobile and live in 42 states. It's the safest single download for a first contract, and it still holds up once you trade regularly. We recommend it to beginners without hesitation.

Add Kalshi second, once the basics feel obvious, since it has the deeper sports book but a harder start.

Two apps cover the most for most people: Polymarket for breadth and ease of use, Kalshi for sports depth. Claim one promo at a time so you can tell which app you actually prefer on your own phone.

Right now, Novig is our pick for pure sports trading, thanks to its no-vig peer-to-peer pricing. ProphetX wins for parlays, and Kalshi offers the deepest market depth. The best fit depends on how you like to trade.

Here's the short version of how these prediction market apps work differently for sports:

• Novig: The sharpest prices. You trade straight against other users, so there's no house margin eating your value.
• ProphetX: The parlay specialist. Its Request-for-Quote system builds and prices same-game parlays fast.
• Kalshi: The deepest liquidity and widest market coverage, plus desktop access.
• FanDuel Predicts: The easiest crossover if you're coming from a sportsbook.
• Polymarket: The strongest sports coverage alongside politics and global event markets.

Because prediction markets work differently than a sportsbook, the "best" app really comes down to whether you value price (Novig), parlays (ProphetX), or depth and range (Kalshi). Whichever you pick, remember that trading involves high risk, so start small and stick to markets you understand.

Trade any of these games on Polymarket, FanDuel Predicts, Kalshi, Novig, and ProphetX.

Take a look at our guide to the best NFL prediction market promos. We break down the top CFB promos for prediction market users as well.