Daily Sudoku - Brain Puzzle

Killer, Thermo, Arrow and Diagonal variants in one app. A new Daily Challenge every day and 11 solving techniques to learn. Free and offline.

Daily Sudoku: a classic number puzzle for every level, from beginner to expert.

Start easy and work up to expert puzzles. Each puzzle has a single solution. Five difficulty levels, five variant modes, and a new Daily Challenge every day.

CLASSIC SUDOKU, 5 LEVELS Relaxed Easy to demanding Expert. Thousands of carefully made puzzles, each with one unique solution.

DAILY CHALLENGE & STREAKS A new puzzle every day. Build your streak and keep your brain sharp.

5 VARIANT MODES

• Diagonal: digits 1 to 9 also appear on both main diagonals
• Killer: solve with cage sums
• Thermo: digits increase along each thermometer
• Arrow: the cells on an arrow add up to the circle value
• Time Attack: race the clock

SMART SOLVING TOOLS

• Highlight matching numbers and cells
• Pencil marks for candidate numbers
• Hints when you get stuck
• Error check and unlimited undo

LEARN 11 SOLVING TECHNIQUES From naked singles and hidden pairs to advanced patterns, learn real solving techniques through visual, step-by-step lessons. The app finds your weak spots and suggests lessons for them.

STATS & ACHIEVEMENTS See your best times, completion rate, and streaks at a glance. Unlock achievements as you improve.

COMFORTABLE DESIGN

• 10 color themes
• Dark mode for easy viewing
• Adjustable font size and haptic feedback
• Vertical layout that is easy to use one-handed

PLAY ANYWHERE Fully offline. Available in English, Korean, Japanese, Spanish, Simplified Chinese, and Traditional Chinese.

Download Daily Sudoku today and train your brain with one puzzle a day!