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Frequently asked
Can I place bets in Odds Eleven?
No. Odds Eleven is a monitor, not a sportsbook. It never places bets and never handles money. When you choose to trade, it opens the exchange (Polymarket or Kalshi) so you act there, on your own account.
Do I need an account?
No login is required. The app creates an anonymous identifier on your device so your watchlist and notifications work. There is no username or password.
Where do the odds come from?
From the public prediction markets on Polymarket and Kalshi. Odds Eleven normalizes them into one view and shows the blended price plus the spread between exchanges. Odds can move quickly and may differ slightly from the exchanges at any instant.
How does P&L tracking work?
If you placed a bet on an exchange, you can log it manually to track its value over time. This is self-reported — Odds Eleven does not connect to your exchange account and cannot access your funds.
How do I remove ads?
Odds Eleven is free and supported by ads. A one-time in-app purchase removes them permanently. Already bought it on another device? Tap Restore Purchases to unlock it again — no second charge.
A word on responsible play
Prediction markets carry real financial risk. Only stake what you can afford to lose. If betting stops being fun, step back and seek help. In the U.S. you can call or text 1-800-GAMBLER. Availability of the underlying exchanges may vary by region.
Odds Eleven is an independent app and is not affiliated with, endorsed by, or sponsored by Polymarket, Kalshi, or FIFA.