SAT Duels is the #1 competitive SAT prep platform. Battle real opponents head-to-head in timed Math and English duels, climb a skill-based ELO ladder, and watch your score improve with every match. It's prep that actually feels like a game: no boring flashcards, no boredom or burnout. Free to play, no credit card required, no catch. Just you, the clock, and someone else trying to beat you to the answer.