Best prediction market apps: how to compare platforms

Prediction market apps let you trade contracts tied to sports, economics, politics, crypto, culture, and other real-world events from your phone.

This guide compares prediction market platforms from OG.com, Kalshi, and Polymarket using publicly available information, as of July 2026. It is for informational purposes only and doesn’t recommend any platform or trade. 

Trading event contracts involves risk, including the risk of losing your full cost to enter a transaction and any applicable fees.

What is a prediction market app?

A prediction market app gives you mobile access to markets built around future events. Prediction markets can cover economics, politics, sports, crypto, culture, technology and other real-world events.

Depending on the platform, the app may also include category filters, live price updates, order controls, alerts, portfolio tracking and access to full settlement terms. Availability can depend on your location, account eligibility and the type of platform offering the market.

What makes a good prediction market app?

A good prediction market app should make the important details easy to find before you trade. You should be able to see what the contract covers, how it settles, what fees apply and whether the market is available to you.

The app should also make it easy to browse markets, track prices, review rules and manage open positions without burying key information behind a flashy user interface.

Regulatory status

Check which company offers the contracts and which regulator oversees the exchange.

In the OG.com app, prediction event contracts are derivatives offered by Crypto.com | Derivatives North America (NADEX), a CFTC-regulated exchange. OG.com provides technology services for access to those event contracts.

Regulation doesn’t remove trading risk. It tells you which legal and operational framework applies to the exchange.

Clear market rules and settlement criteria

A short market title can’t explain every settlement condition. The rules should name the deadline, outcome criteria and source used to determine the result.

For example, a market asking whether inflation will exceed 3% may rely on a specific government release, reference month, revision policy and publication time. A later revision may not count if the rules use the first published figure.

Each prediction event listed on OG.com includes specific settlement terms. Read those terms before trading rather than relying only on the market headline.

Transparent fees

Prediction market app fees can affect the cost of entering and exiting a position. Check whether charges vary by market, order type or contract price, and whether withdrawal fees apply.

In the OG.com app, you can review the amount at risk, potential payout and applicable fees before placing an order.

Market variety

A useful market prediction app should cover events you understand or want to follow. Market availability changes, so check the current catalog rather than assuming every category is always active.

You can typically browse markets across sports, crypto, economics, politics, tech, culture, climate and other events. 

Discover markets to trade on OG.com

• Sports prediction markets
• Crypto prediction markets
• Economics prediction markets
• Politics prediction markets
• Tech prediction markets
• Culture prediction markets
• Climate prediction markets

UX and device access

A prediction market app should make prices, rules, positions and deadlines easy to find on a small screen. Useful features may include market search, category filters, live price updates, limit orders, position tracking and access to full contract rules.

Also check whether the service provides a web platform. A mobile app may work well for monitoring prices, while a larger screen can make long settlement terms and order-book details easier to review.

Keep in mind that the device access doesn’t guarantee trading access. Even with the app installed, the contracts available to you can still depend on your location, identity verification, account status and local rules.

Prediction market apps compared

OG.com

OG.com is an app-first prediction market experience with access to CFTC-regulated event contracts offered through NADEX. It brings together sports markets and categories such as politics, crypto, economics, culture, technology and climate.

The app supports market discovery, event contract review, trading and position monitoring. Alpha, its built-in assistant, can provide insights about available OG.com event contracts and existing positions.

OG.com is available through its mobile app and website, so you can browse markets and manage positions across devices.

Kalshi

Kalshi is a CFTC-regulated event-contract exchange with markets tied to economics, politics, sports, weather, culture and other events. Users can browse markets, review contract rules, place orders and track positions through its mobile app or web platform.

Funding methods and transaction fees can vary by account, market and order type. Kalshi publishes its current fee and funding details through its website and help center.

Polymarket

Polymarket covers two different app experiences. Polymarket US is operated by QCX LLC as a CFTC-designated contract market, with features for placing orders, reviewing market rules, tracking positions and managing funds. And the global platform Polymarket uses crypto wallets, USDC and blockchain-based settlement.

Which version you can use depends on your location. Eligible U.S. users can access Polymarket US, while trading on the global platform is restricted in the U.S. Funding methods, fees and settlement processes also differ between the two products.

How prediction market app prices work

Prediction markets use yes-or-no event contracts that trade between $0 and $1. A Yes contract trading at 60% market-implied probability would be priced at 60¢. 

To enter the market, you pay the contract price plus any applicable fees. If the contract settles at $1, its value becomes $1. If it settles at $0, it expires without value.

Prices can change before settlement as traders respond to news, official data, injuries, polling, company announcements, weather forecasts or live events. You may be able to exit before the deadline, but the available price depends on current demand, liquidity and the bid-ask spread.

How to choose a prediction market app

First you want to check whether the app is available in your location and whether you meet its eligibility requirements. Then check who offers the contracts, how the exchange is regulated and what rules govern settlement.

Open a few markets you’d realistically follow. Compare the prices, spreads, deadlines, trading activity and settlement sources rather than relying on the category list alone.

Make sure to review the full fee schedule, supported payment methods, withdrawal terms, customer support and the tools available for tracking or closing positions.

How to trade prediction markets on OG.com

With OG.com, you can trade event contracts on real-world outcomes across different market categories.

1. Create an account: Open an account and complete sign-up, including identity verification. You can use our web or mobile platforms. 
2. Browse markets: Explore markets across economics, culture, politics, sports, and other real-world events.
3. Review and trade: Compare the market price with your own view. Check the rules, fees, and settlement details before opening a position.
4. Monitor your position: After trading, your contract appears in your open positions, where you can track price movement as new information comes in.

FAQs about the best prediction market apps

What are the top prediction market apps right now?

OG.com, Kalshi and Polymarket are prominent prediction market platforms, but their regulatory structure, geographic access, funding methods, fees and market catalogs differ. Compare those details against your location and the events you want to follow rather than treating one app as universally best.

How do prediction market apps work?

Prediction market apps let users buy and sell contracts tied to defined outcomes. Prices move with supply and demand and can be read as market-implied probabilities. At settlement, a binary contract typically becomes worth $1 if the defined outcome occurs and $0 if it doesn’t.

Are prediction market apps legit?

Some prediction market apps provide access to CFTC-regulated exchanges. OG.com provides access to contracts offered through CDNA, while Kalshi and Polymarket US are CFTC-designated contract markets. Others operate under different legal, geographic or play-money structures. 

Check the exchange operator, regulatory status, eligibility requirements, terms and contract rules before using an app.

How do prediction market apps make money?

A prediction market platform may charge transaction fees, commissions, withdrawal fees or fees tied to certain markets and order types. Some platforms also use market-maker or rebate programs.

Important Information: Prediction is an event contract that is a derivatives product offered by North American Derivatives Exchange, Inc. (NADEX), a CFTC-regulated exchange, which does business under the brand OG.com Prediction Markets (OG) Crypto.com | Derivatives North America and uses a CFTC-regulated exchange that uses OG.com technology. 

Trading on OG.com involves risk and may not be appropriate for all. By trading you risk losing your cost to enter any transaction, including fees. You should carefully consider whether trading on OG.com is appropriate for you in light of your investment experience and financial resources. Any trading decisions you make are solely your responsibility and at your own risk