Sudoku Master — Zen & Classic
Native Android MVVM Architecture • Custom 60 FPS Vector Canvas • R8 Optimized
A clean, high-performance, and feature-rich native Android Sudoku application built with MVVM architecture, custom Canvas drawing engine, R8 Code & Resource Optimization, and Google Play Billing 8.0.0 integration.
>_ Core Feature Modules
🎯 5 Balanced Difficulties
From Too Easy (25 mask holes) for quick warm-ups to Super Hard (58 mask holes) requiring master deduction techniques.
🧘 Zen & Classic Modes
Play in Zen Mode with infinite lives (❤️ ∞) and zero timer pressure, or challenge yourself in Classic Mode with a 3-heart health system.
🎨 12 High-Contrast Themes
Rosso Nero, Cyberpunk, Golden Hour, Emerald Zen, Ocean Deep, Midnight Diamond, Amethyst Purple, Minimal Light, Retro Cream, Nordic Frost, OLED Black.
⚡ Pro Controls & Assistants
Multi-candidate Pencil Notes, Magic Wand 🪄 auto-resolver, unlimited Undo stack, and Keypad Auto-Dimming when digits are exhausted.
🏆 Hall of Fame & CSV Export
3-tier local leaderboards per difficulty level with CSV pack export powered by system FileProvider.
🔒 100% Privacy-First
Zero ad networks, zero telemetry, zero analytics SDKs. All preferences and game progress are stored 100% locally on your device.
>_ Technical Specification Matrix
| Parameter | Specification |
|---|---|
| Target SDK | SDK 36 (Android 16) |
| Minimum SDK | SDK 26 (Android 8.0) |
| Language & Pattern | Kotlin 1.9, Jetpack Core, MVVM Architecture |
| Graphics Engine | Custom 60 FPS Vector Canvas Drawing Engine (SudokuGridView.kt) |
| Build Shrinking | R8 Code & Resource Shrinking (7.30 MB Signed Bundle) |
| Monetization | Google Play Billing Client 8.0.0 (Optional one-time Pro Upgrade) |