Mobile
Still Sudoku
A clean, minimal Sudoku app with multiple difficulty levels. No ads, no clutter — just puzzles.
roleFull Stack Developer & Designer
duration4 weeks
teamSolo
year2025
The Challenge
Most Sudoku apps are cluttered with ads and distractions. Players needed a clean, focused experience with meaningful progression.
The Solution
Built a backtracking puzzle generator that creates unique, solvable puzzles. Three error modes cater to different play styles. XP and achievements add long-term engagement.
Results
0
Difficulty Levels
0
Unlockable Themes
0
Error Modes
Architecture
// frontend: React Native (Expo)
// backend: None (fully offline)
// database: Zustand + AsyncStorage
// hosting: App Store + Play Store
// patterns:
// - Backtracking Puzzle Generator
// - State Management (Zustand)
// - Undo/Redo Stack
Highlights
- 4 difficulty levels — Easy, Medium, Hard, Expert
- 3 error modes — Strict, Assist, and Zen
- Notes mode, undo/redo, and hint system
- XP, leveling, daily streaks, and achievements
- 6 unlockable themes including AMOLED and Ocean
Stack
React NativeExpoZustand