Head-to-head comparisons
Each comparison puts two apps side by side. It covers fees on the same $100 trade, who holds your cash, state status and which one to pick.
Kalshi vs PolymarketFor most Americans, Kalshi. It has been CFTC-regulated since 2020, takes ten funding methods and pays interest on idle cash. Pick Polymarket US if you want Polymarket's markets in a regulated US app. It takes card, bank or wire. Both charge takers almost the same fee.Read the comparison →Kalshi comparisons
Polymarket comparisons
Kalshi alternatives: apps like Kalshi
Kalshi ranks first of 15 on our method, at 4.9 out of 5. The alternatives split two ways. Some apps sell Kalshi's own contracts in their app. Others run a separate exchange with their own markets.
Apps that trade Kalshi's own markets
For a Kalshi-listed contract, the contract is the same and trades on Kalshi's order book. The fees, funding, custody and app are what differ.
Interactive Brokers 4.4 / 5, #5 of 15
Routes some orders to Kalshi’s exchange, among others.
Robinhood 4.3 / 5, #6 of 15
Routes some orders to Kalshi’s exchange, among others. Kalshi vs Robinhood.
Coinbase 4.1 / 5, #8 of 15
Routes orders to Kalshi’s exchange.
Webull 4.0 / 5, #9 of 15
Routes orders to Kalshi’s exchange.
PrizePicks 2.7 / 5, #14 of 15
Routes orders to Kalshi’s exchange.
Underdog Predict 2.6 / 5, #15 of 15
Routes some orders to Kalshi’s exchange, among others.
Other exchanges with their own markets
Gemini Predictions 4.7 / 5, #2 of 15
Best for existing Gemini crypto customers.
Polymarket US 4.7 / 5, #3 of 15
Best for trading Polymarket from the US, on a CFTC-regulated exchange. Kalshi vs Polymarket.
OG 4.6 / 5, #4 of 15
Best for trading directly on the exchange behind Crypto.com’s markets.
ProphetX 4.3 / 5, #7 of 15
Best for paying commission only on net gains.
Polymarket alternatives: apps like Polymarket
For Americans, the first alternative is Polymarket's own US app. The crypto site, polymarket.com, is close-only from the US. Polymarket US runs a separate, CFTC-regulated exchange, and scores 4.7 on our method.
Beyond Polymarket, these rank highest on the same method:
Kalshi 4.9 / 5, #1 of 15
Best for all six market categories, traded on the exchange itself. Kalshi vs Polymarket.
Gemini Predictions 4.7 / 5, #2 of 15
Best for existing Gemini crypto customers.
OG 4.6 / 5, #4 of 15
Best for trading directly on the exchange behind Crypto.com’s markets.
Interactive Brokers 4.4 / 5, #5 of 15
Best for comparing ForecastEx, Kalshi and CME prices in one account.
Every app, every attribute
All 15 apps in our ranking, on the facts they publish. Each name links to its full review.
| # | App | Score | Structure | Fee on $100 at 50¢ | Funding | Public prices |
|---|---|---|---|---|---|---|
| 1 | Kalshi | 4.9 | Own exchange | $3.50 | bank, card, wire, wallet apps and crypto | ✓ |
| 2 | Gemini Predictions | 4.7 | Own exchange | $3.50 | bank, wire and wallet apps | ✓ |
| 3 | Polymarket US | 4.7 | Own exchange | $3.48 | bank, card and wire | ✓ |
| 4 | OG | 4.6 | Own exchange | $3.50 | bank, card, wire, wallet apps and crypto | ✓ |
| 5 | Interactive Brokers | 4.4 | Own exchange | $2.00 to $4.00 | bank, wire and crypto | ✓ |
| 6 | Robinhood | 4.3 | Own exchange | $2.00 to $4.00 | bank, card and wire | ✓ |
| 7 | ProphetX | 4.3 | Own exchange | $2.00 if it wins, $0 if not | bank, card, wire, wallet apps and crypto | ✓ |
| 8 | Coinbase | 4.1 | Broker | Rate not published | bank, card, wire, wallet apps and crypto | ✓ |
| 9 | Webull | 4.0 | Broker | $4.00 | bank, card and wire | ✓ |
| 10 | Novig | 3.9 | Own exchange | $0.00 to $5.00 | bank, card, wallet apps and crypto | ✓ |
| 11 | DraftKings Predictions | 3.8 | Own exchange | Up to $4.00 | Not published | ✓ |
| 12 | Fanatics Markets | 3.7 | Broker | Up to $4.00 | bank, card, wire and wallet apps | ✓ |
| 13 | FanDuel Predicts | 2.8 | Broker | $4.00 | bank, card and wallet apps | ✗ |
| 14 | PrizePicks | 2.7 | Broker | $4.00 | bank, card and wallet apps | ✗ |
| 15 | Underdog Predict | 2.6 | Own exchange | $2.00 + exchange fee | bank, card and wallet apps | ✗ |
Scores follow our published method, from each app's own pages. “Own exchange” includes an exchange the app's company controls.
What differs between prediction market apps
Exchange or broker. 10 apps own or control an exchange. The rest pass your order to someone else's, often Kalshi's, and add their own fee.
Fees. Exchanges such as Kalshi charge on a curve that peaks at 50¢. Brokers usually charge a flat amount per contract, which costs most on long shots. See fees on the same $100 trade.
Funding. Some apps take a debit card, PayPal or Venmo. Others take only bank transfers or wires, and a few take crypto.
States. Every app here is federally regulated, but states contest sports contracts. Some apps skip sports where their parent runs a sportsbook. See where prediction markets are legal.
Public prices. 12 of 15 show live prices without an account. Only those that publish a feed can be priced side by side, on our live prediction market odds.
How we make money
CoinStats may earn a commission if you open an account through links on our pages. No app pays for its score or its place in a comparison: both come from the same published method.