GridZen Sudoku - Sudoku Puzzle

GridZen Sudoku brings a clean, focused puzzle experience to iPhone and iPad, with classic Sudoku and a collection of rule variants for players who want something deeper than the standard grid.

Choose from four difficulty levels, solve a fresh Daily Challenge, track your fastest times, and build streaks as you improve. Whether you play for a few quiet minutes or chase expert-level records, Sudoku keeps the board clear, responsive, and easy to read.

Features:
- Classic Sudoku with uniquely solvable puzzles
- 8 game variants: Classic, Diagonal, Windoku, Center Dot, Asterisk, Anti-Knight, Anti-King, and Jigsaw
- 4 difficulty levels: Easy, Medium, Hard, and Expert
- Daily Challenge with streak tracking
- Notes mode for candidate numbers
- Undo, erase, and limited hints
- Error highlighting and game-over rules after 3 mistakes
- Row, column, box, and matching-number highlights
- Auto-save and continue game support
- Fastest-time records by difficulty
- Detailed statistics, win rate, win streaks, and variant records
- Haptic feedback for correct moves, mistakes, and completion
- Multiple languages with instant switching

GridZen Sudoku is designed for clarity, speed, and long-term replay. Every puzzle is generated with a unique solution, so each game rewards careful reasoning instead of guessing.

Download GridZen Sudoku and make every grid a small logic victory.