iOS & iPadOS

Sudoku for iPhone and iPad

Quiet focus.
Zero clutter.

A calm sudoku with no ads, no sign-up and no internet needed. Built by one developer for the few quiet minutes you get in a day.

Join the beta on TestFlightSee the board
  • The Sudoku Mori home screen in the light theme: misty mountains and pine trees under the title, an easy classic puzzle to pick up where you left off with 39 cells remaining, then cards for a new classic puzzle, the daily puzzle with Easy, Medium and Hard, personal progress at 1 of 20 days for September, and the technique lessons.
    Light
  • The same home screen in the dark theme, the mountains under a night sky and a full moon, with the cards on a deep blue background.
    Dark

The board

Every number, one tap away.

Big keys for your thumb and controls that stay put. Press and hold a number to keep it highlighted while you scan the grid.

  • An easy classic puzzle in the light theme, the timer at zero with no mistakes or hints, the keypad of one to nine under the board, and undo, redo, erase, notes and hint below it.
    Light
  • The same puzzle and controls in the dark theme, white digits and blue keys on a deep blue board.
    Dark

Sudoku should feel like your morning coffee, not a slot machine.

What's inside

Why it feels calm.

Nothing in the way

No ads, no pop-ups, no account. Open the app and your puzzle is right where you left it.

Plays offline

On a plane, on the subway, anywhere. Your progress stays on your device, and syncs through your own iCloud if you turn it on.

One-handed controls

Undo, redo, erase, notes and hints sit right under the board, where your thumb already is.

Notes that clear themselves

Place a number and the matching pencil marks disappear from its row, column and box.

Progress without pressure

A daily puzzle, a monthly goal and a streak. Miss a day and nothing bad happens.

A proper native app

Written in Swift and SwiftUI, with Dynamic Type, higher contrast and haptics you can switch off.

Why no ads, and why offline

Technique lessons

Hints that show you why.

Stuck? The hint names the technique behind the next move, so you learn something instead of just filling in a cell. Eight lessons take you from single candidates to X-Wing, each with a worked example and three practice puzzles.

Join the beta on TestFlightRead the techniques
  • The Learn the techniques sheet in the light theme, listing single candidates, hidden singles, locked candidates, naked and hidden pairs and triples and X-Wing, each with its own count of three puzzles, none of them started yet.
    Light
  • The same list of techniques in the dark theme, each row a card on a dark background.
    Dark

Two ways to play

Take your time, or take the test.

Relaxed gives you unlimited mistakes and explains its hints. Challenge gives you three strikes and a running clock. Either way, a calendar keeps track of the days you've solved, with a monthly goal if you want one.

  • The Classic Puzzles sheet in the light theme: an easy puzzle to continue, Relaxed and Challenge to choose between, and Easy through Master listed with the technique each one needs.
    Modes
  • The Your Progress sheet in the dark theme: the daily calendar for September 2026 at medium difficulty, today's date ticked, and a September goal of 0 of 20 dates solved.
    Progress

The bigger screen

Made for iPad, not stretched to fit.

The board on one side, the keypad and controls on the other, so your hand never covers the grid. Left-handed? Flip it.

Sudoku on iPad
  • Sudoku Mori on iPad in the light theme and landscape, set up left-handed: an expert classic puzzle with the keypad, undo, redo, erase, notes and hint in the left column and the board filling the right.
    Left-handed · Light
  • The right-handed iPad layout in the dark theme, the board on the left and the controls on the right, on a deep blue background.
    Right-handed · Dark

Take a quiet moment today.

Sudoku Mori is in beta on TestFlight. Play it, tell me what to fix, and help shape it before it reaches the App Store.

Join the beta on TestFlightWhat the beta includes