SudokuDay: Daily Sudoku Puzzle

Welcome to SudokuDay—your quiet, daily brain-training ritual.

Escape the noise and enjoy a calm, premium Sudoku experience designed to help you relax, focus, and keep your mind sharp. Every single day, a fresh, hand-crafted Sudoku puzzle awaits you. Play it at your own pace, build your daily streak, and track your brain's progress over time.

Whether you're a beginner looking to learn or a Sudoku master seeking a calm challenge, SudokuDay provides the perfect balance of minimal aesthetics and powerful tools.

Key Features:

* The Daily Challenge: One signature daily puzzle for every difficulty level. Revisit the monthly calendar to complete missed days, save your streak, or replay your favorites.
* Calming Design System: Choose between elegant Light Mode (warm ivory background) and Dark Mode (soothing charcoal). Customize your board with themed accent palettes like Matcha Focus, Sunset Calm, Ocean Mind, and Lavender Notes.
* Premium Grid & Smart UX: Smooth controls, satisfying cell highlighting, and automatic notes cleanup (pencil marks are updated dynamically when correct values are placed).
* Helpful Assistance: Never get stuck. Enjoy unlimited Undo/Redo, a handy Erase tool, and smart hints that guide your logic.
* Track Your Progress: Keep your daily streak alive and view detailed statistics including average solve times, fastest records, and accuracy trends.
* Earn Achievements: Unlock special badges as you improve, such as "No Mistakes," "No Hints," "Fast Thinker," and "Archive Explorer."
* Play Offline: No internet? No problem. Play your daily puzzle or archive offline with reliable local fallbacks.

Meet Nini the Number Fox:
Enjoy small, delightful moments with Nini, your calm companion guide. Nini is there for gentle reminders, milestone celebrations, and smart hints, making your daily ritual feel inviting and screen-friendly.

Make SudokuDay your daily mindful habit. Download now and start today's puzzle!