GUIDES
Guides that show the math.
Side-by-side comparisons and ranked lists, built from the same reviewed catalog as the rest of doddo. Every guide shows when it was last checked and links to the official sources.
Prediction marketsKalshi vs Polymarket: which fits a US user?
Kalshi vs Polymarket US for US users: CFTC status, state limits, fees, deposits and October 2026 signup credit terms, each checked against official sources.
ClaimsThe best class action settlement apps in 2026
Ten class action settlement apps compared on how they match you, what they cost and who files: doddo, Claimful, Payout, Settlemate, MoneyPilot and more.
Banksdoddo vs Bankrewards vs Doctor of Credit: which bank bonus site fits you?
doddo vs Bankrewards vs Doctor of Credit vs BankBonus.com: coverage, state filters, fee and direct deposit detail, tracking, cost and how each site makes money.
Bonus conversionOddsJam alternatives: free and paid tools compared
Compare OddsJam alternatives: Outlier, OddsShopper, Unabated, Pikkit, Crazy Ninja Odds and doddo, with prices, free tiers and the account-limit risk.
Bonus conversionHow do bonus bets work?
How bonus bets work at DraftKings, FanDuel and other US sportsbooks: why the stake is not returned, which odds keep more value and how a hedge converts one.
Prediction marketsIs Kalshi legit? What its CFTC status does and doesn't mean
Is Kalshi legit? What its CFTC status covers, how your money is held, which states limit it, and how Kalshi and Polymarket US compare on safety in 2026.
Prediction marketsKalshi alternatives: seven apps, sorted by why you are switching
Kalshi alternatives for US users, sorted by why you are switching: state limits, fees, funding or markets. Seven apps with regulators and October 2026 terms.
Prediction marketsThe best prediction market apps in 2026, compared on published terms
Prediction market apps for US newcomers, sorted on four published facts: regulator, fee formula, signup credit terms and state limits. Checked October 2026.
Prediction marketsKalshi fees, explained with worked examples
Kalshi fees explained: the trading fee formula, worked examples at 10 to 90 cents, deposit and withdrawal costs by method, and how Polymarket US fees compare.
Prediction marketsKalshi vs Robinhood: what changes when you trade through Robinhood
Kalshi vs Robinhood prediction markets: Robinhood can route orders to Kalshi, so the real differences are fees, the app, state limits and signup offers.
Bonus conversionHedging bets: how the math works
Hedging bets explained in plain words: the formula behind a hedge bet calculator, worked tables for a $100 bonus bet, and when a hedge only adds cost.
BanksChime vs SoFi: which sign-up bonus fits your paycheck?
Chime vs SoFi, checked October 11, 2026: the Chime sign-up bonus and SoFi checking bonus terms, direct deposit rules, fees, ATMs and who holds your money.
Prediction marketsHow does Polymarket work? Contracts, odds and withdrawals on Polymarket US
How does Polymarket work in the US? Contracts, odds, signup, deposits, withdrawals and fees on Polymarket US, with a worked example. Checked October 2026.
Prediction marketsIs Polymarket legit? What is legal in the US and what is not
Is Polymarket legit and legal in the US? Polymarket US's CFTC status, polymarket.com's 2022 CFTC order, fund safety, age rules and state lawsuits. Checked Oct 2026.
Prediction marketsPolymarket fees, explained with worked examples
Polymarket fees explained: the Polymarket US taker and maker formula, worked examples at 10 to 90 cents, plus deposit and withdrawal limits, timing and costs.
How we write these
Each guide is checked against the provider's own terms, fee schedule or court notice. Amounts are dated, estimates are labeled, and anything we could not confirm is called out rather than filled in.
When doddo is in the comparison
We make doddo. When it appears in a list or comparison, the guide says so, and the other products get the same columns and the same honest pros and cons.