Spark is a daily puzzle app where curiosity comes to play. Discover fresh themes—from rebellions and rockets to Pokémon and potatoes—through clever puzzles spanning history, pop culture, science, geography, sports, and more. With four games, free to play every day, Spark turns curiosity into a fun daily habit. No stress, no timers, just the joy of discovery. Why Spark stands out: - Surprising daily themes for learning something new, from TikTok to Timbuktu - Four clever games, designed to spark “aha” moments - Human-crafted puzzles made by people, not algorithms - Habit-building tools to track your progress and make curiosity stick From the creators of Elevate and Balance, Spark is part of a collection of mental fitness apps designed to strengthen your mind.