Quiet Sudoku

Make room for a little focus. Quiet Sudoku is a calm home for sudoku puzzles on iPhone and iPad. It is free, has no ads, and needs no account, purchase or subscription. The puzzles, archive and personal history work offline. Open the app for daily sudoku at your level, return to an earlier date, or begin a fresh practice grid. Everyone receives the same daily grid for a chosen level. Practice play gives you another quiet logic puzzle whenever you want one. Choose eight difficulty levels from Beginner to Maelstrom. Start gently, then move into longer and more demanding solves when you are ready. Each level keeps its own progress history, so a new challenge does not erase the shape of earlier practice. The board is made for steady solving: • Cell-first and number-first entry modes • Pencil marks and automatic notes that follow allowed candidates • Undo and redo for values and notes • Hints that explain a supported deduction before you apply it • Clearly labelled solution reveals when those techniques run out • Pause, autosave and a quick return to an unfinished grid • Light, dark mode and a setting that follows your device • Matching-number highlights and an enlarged pencil-note view This number puzzle stays quiet while you work. There is no lives limit, no timer pressure and no advertising interruption. Mistakes are not called out on the board. Your time, hints and mistakes appear after completion, alongside a score you can use to follow your own practice. History is kept separately for every level. Review completion times, scores, clean or assisted solves, recent charts and daily streaks. The archive lets you revisit past dates, and completed grids remain available to inspect. Daily comparison can place your time and score beside an anonymous aggregate for the same puzzle and level. Daily comparison is on by default and sends gameplay results under a random app-generated ID. You can turn it off or reset that ID in Settings. Core play remains available without the comparison service. Your notebook stays on your device. Export a readable JSON backup when you want to move it yourself. The app does not provide automatic cloud sync, and exported backups are not encrypted by the app. Settings also lets you tell a friend, open the store rating page, or prepare a feedback email. Privacy Policy and Support open inside the app. New players see the same concise How to play guide that remains available in Settings. Quiet Sudoku can be a brief brain game with the morning coffee or a patient grid at the end of the day. Take the time you need, keep the tools that help, and let the rest stay out of the way.