A smart, playful multiplication trainer designed to help kids move from counting to instant recall. Multiplay uses spaced repetition and adaptive learning to make practicing math feel more like a game and less like a chore.
Unlike simple quiz apps, Multiplay uses cognitive science principles to guide learners through the multiplication tables.
Getting it right is just the first step. True mastery means instant recall.
- Learning: Identifying the fact.
- Speed Building: Getting faster at calculating.
- Fluent Mastery: Answering in under 3 seconds. The app tracks these speeds to ensure kids aren't just counting on their fingers.
We don't just go from 1 to 12. Multiplay introduces tables based on their pedagogical difficulty:
- The Patterns: 1, 2, 3, 5, and 10 (The easiest to grasp).
- The Extensions: 4 and 11.
- The Logical: 9 (finger tricks) and 6 (extension of 3).
- The Challenge: 7, 8, and 12.
Smart Auto-Unlock: When a child masters about 65% of their current tables, the system automatically introduces a new one, keeping the challenge just right.
To prevent frustration, the app manages exactly what the user sees:
- Active Set: We focus on just 15 facts at a time. Once one is "Mastered," a new one is rotated in.
- Weighted Practice: The app spends 60% of the time on the 5 facts the user finds hardest, ensuring they actually improve where it matters.
- Modern Design: Clean glassmorphism UI with vibrant colors.
- Tactile Feedback: Subtle haptic taps for correct answers and error signals.
- Detailed Stats: A visual heatmap showing exactly which facts are mastered and which need work.
- Offline First: Works anywhere, with progress saved locally in the browser.
- Svelte 5: Responsive and reactive frontend.
- Web Workers: The learning engine runs in the background to keep things smooth.
- IndexedDB: Persistent local storage for user profiles and progress.
Created with โค๏ธ by vaju & Antigravity.


