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Spark & Anvil
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ReckonQuest
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Reckon Duel

Pick a kit — then 2–4 players take turns on one device. Same questions for everyone; highest first-try score wins.

Choose a kit

Kit 1: Systems & Chickens-and-Cows grades 4-5 · 25 questions Kit 2: Set Up the Equation grades 5-6 · 25 questions Kit 3: Recognize the Type & Track the Units grades 5-6 · 25 questions Kit 4: Draw a Diagram grades 5-6 · 25 questions Kit 5: Age Problems grades 5-6 · 25 questions Kit 6: Coin & Stamp Problems grades 6-7 · 25 questions Kit 7: Work-Rate Problems grades 6-7 · 25 questions Kit 8: Mixture Problems grades 6-7 · 25 questions Kit 9: Work Backwards grades 6-7 · 25 questions Kit 10: Try a Smaller Case grades 6-7 · 25 questions Kit 11: Crossing, Pouring & Weighing Riddles grades 6-7 · 25 questions Kit 12: Check It's Reasonable grades 7-8 · 25 questions Kit 13: Generalize the Rule grades 7-8 · 25 questions Kit 14: Multi-Step Systems grades 7-8 · 25 questions Kit 15: Choosing the Right Heuristic grades 7-8 · 25 questions Kit 16: Capstone — Word-Problem Synthesis grades 7-8 · 25 questions

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Spark & Anvil

Spark & Anvil makes thoughtfully-crafted educational apps for kids and teens ages 3–18 — playable free right now in your browser, with native iPhone, iPad, Mac, and Apple Vision Pro apps in development. All free, forever. No ads, no in-app purchases, no tracking. Built with Swift 6 and SwiftUI, running on-device AI.

501(c)(3) non-profit (pending) — we’re finalizing fiscal sponsorship; once it’s in place, donations open and are tax-deductible through the sponsor’s EIN. Support the mission →

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© 2026 Spark & Anvil. Made with care for ages 3–18. 501(c)(3) non-profit (pending) · Free forever · No ads · No tracking · COPPA compliant

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