The Daily Nine - Sudoku

Classic sudoku, a daily streak, and a fade-the-board mode you won't find anywhere else.

The Daily Nine is sudoku, refined. A clean, modern board that puts the puzzle front and center. No clutter, no noise, just you and the grid. Whether you've got two minutes, twenty minutes, or five hours, there's a mode for the moment.

Daily Challenge Everyone gets the same puzzle every day. Build a streak, beat your best time, and share your result: no spoilers, Wordle-style. Browse past days in the calendar and fill in the ones you missed.

Classic Pure, untimed sudoku across four difficulties: Easy, Medium, Hard, and Expert. Every puzzle is guaranteed to have exactly one solution, generated fresh so you never see a repeat.

Time Decay Our signature mode. Correctly placed numbers slowly fade and disappear if you don't keep the board moving. Watch the dissolve, race the clock, and chase a high score. It's sudoku with a pulse.

Built for focused play

• Smart highlighting for rows, columns, boxes, and matching numbers
• Pencil-mark notes with auto-cleanup
• Undo, erase, and one free hint each game
• Mistake counter and elapsed timer
• Light and dark themes that follow your system
• Sound and haptic feedback you can turn off
• Full keyboard support and accessible, reduced-motion-friendly animations
• Game Center leaderboards, see how you stack up

No accounts. No nonsense. Your progress saves automatically, so you can put it down and pick it right back up.

Download The Daily Nine and make sudoku part of your day.