Here's a look at the promo codes being offered by best DFS apps like Underdog Fantasy, Sleeper and ParlayPlay.

Use the Chalkboard promo code FOX to get a 100% deposit match up to $100 plus a free square. Deposit $1+ to claim your match and start making picks today.

Compare the best DFS apps for 2025. Explore reviews of UnderDog, DraftKings, Sleeper, and more, including bonuses, features, ...

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