AnzanPro — Building a Multi-Platform Digital Abacus Learning System

EdTechAnzanPro (Internal Product)•4 months•6 engineers

The Challenge

Traditional abacus learning relies on physical soroban manipulation, making remote instruction difficult. The core engineering challenge was replicating realistic bead physics and multi-touch gesture recognition across Android, iOS, and Web from a single codebase — while maintaining sub-100ms touch response to feel tactile rather than laggy.

Our Approach

We built the platform in Flutter using a custom gesture detection layer that tracks individual finger positions on the soroban, calculates bead snap points, and animates transitions at 60fps. Firebase handles real-time sync between student sessions and tutor dashboards, with Cloud Functions processing analytics aggregation. A Node.js backend manages curriculum content, organization billing, and progress report generation. The gamification engine uses a leveling system tied to accuracy and speed benchmarks to sustain student engagement.

Tech Stack

FlutterFirebaseNode.jsMongoDBCloud Functions

Key Results

✓Single codebase serving Android, iOS, and Web

✓Sub-100ms touch response on the digital soroban

✓Deployed across 5+ countries with multi-language support

✓Gamified progression system improving student retention by 40%

Features Delivered

⚡Multi-touch Digital Soroban

⚡Tutor Dashboard

⚡Student Progress Analytics

⚡Offline Practice Mode

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