Start with six filters
- Eligibility: Can the venue and contract legally serve your current location?
- Liquidity: What price and size can actually execute now?
- Total cost: Include fees, spread, slippage, deposits and withdrawals.
- Resolution quality: Are the rules, source and edge cases precise?
- Custody: Who holds collateral and what wallet or bank setup is required?
- Workflow: Decide whether you need mobile simplicity, limit orders, an API, portfolio tools or on-chain research.
Platform map
| Platform | Useful starting point | Key diligence | Official source |
|---|---|---|---|
| Polymarket | Broad event catalog and order-book trading | Product, region, network and resolution rules | Website |
| Kalshi | U.S. CFTC-designated exchange | Fee schedule and contract availability | Website |
| OG | U.S. event contracts with consumer and social features | Product-specific fees and eligibility | Website |
| PredictStreet | Football-focused regulated access in supported regions | Country eligibility and market depth | Website |
| Pascal | Noncustodial Solana trading and API access | Smart-contract, matching-engine and beta risk | Docs |
Do not rank by advertised fee alone
A venue with a lower fee can still deliver a worse fill if its spread is wider or its order book is shallow. Record the best bid and offer, estimate slippage for your size, then calculate expected payout under the exact resolution rules.
Platform status can change. Recheck current terms before depositing and use the legal eligibility checklist. For Kalshi specifically, use our fee formula guide.
Independent platform guides
Frequently asked questions
What is the best prediction market app?
There is no universal winner. The right venue depends on legal eligibility, contracts available, executable liquidity, total fees, custody model and the quality of its resolution rules.
Should I use more than one prediction market?
Comparing venues can reveal better prices, but multiple accounts add funding, tax, custody and operational complexity. Do not open accounts where you are not eligible.
Does the app with the most markets always have the best liquidity?
No. Market count is not executable depth. Inspect the order book, spread and likely slippage on the exact contract you want to trade.