One puzzle. Every day.
SudokuDay delivers exactly one beautifully curated, hand-crafted Sudoku puzzle to your phone every morning. No distraction. No timers. Only pure mental calm, streaks, and customization.
1
Puzzle Per Day
6
Aesthetic Palettes
100%
Calm Ad-Free
Select any aesthetic style below to see the entire simulator and landing page interface recolor instantly!
Click on the smartphone tabs to explore the real Android app interface! Run through the calendar archives, analyze personal statistics, customize game preferences, or launch into a fully playable 9x9 daily puzzle!
July 11, 2026
Today's puzzle completed! Streak secured.
Fantastic work! You completed today's mental exercise.
“Stuck? Try scanning row-by-row or jotting down candidate notes for a single box.”
Zen Focus
Unlimited play
Nini is your loyal guide who keeps watch over the SudokuDay forest. Whenever you are stuck, Nini gives gentle, helpful hints.
Try asking Nini a strategy question! She knows advanced techniques like Naked Singles, Candidate Notation, X-Wings, and more.
Hello, little cub! 🐾 I am Nini, your number fox. Ask me any questions about Sudoku strategies, from Scanning to Swordfish patterns! 🍃
SudokuDay publishes shortly on the Google Play Store. Join our early pre-registration newsletter today to unlock the exclusive Lifetime PRO Badge (a $4.99 value) and the premium Matcha Focus palette for free upon release!