CLOR SUDKU

A new way to see Sudoku

Sudoku,
without the numbers.

Use nine colors instead of 1–9. Every color appears once in each row, column, and 3×3 box.

Download on the App Store QR code to download Color Sudoku on the App Store Scan with iPhone Color Sudoku
Easy 00:00 3

Free demo

Level 001

Nine colors instead of 1–9. Three lives, three hints, three undos — the same rules as the app.

Tap a color to place it

Level 001, playable here. Open it full size.

Classic logic, translated

Same logic. New language.

  1. RowsAll nine colors, no repeats.
  2. ColumnsAll nine colors, no repeats.
  3. 3×3 boxesAll nine colors, no repeats.

Play your way

Everything useful. Nothing between you and the puzzle.

Choose a challenge, keep track of possibilities, and see your progress—all without an account or connection.

The Color Sudoku menu showing five difficulty levels and a custom game option
Five difficulties + custom gamesStart with Easy or work up to Evil.
A Color Sudoku game with notes mode active for marking possible colors
Notes, hints, and undoExplore the logic without losing your place.
The statistics screen showing locally saved Color Sudoku progress
Progress that stays on your deviceSaved games, settings, and statistics remain local.
Offline by designNo account, backend, ads, or connection required.
How app data works

Color is never the only cue

Built to stay readable.

Turn on distinct symbol overlays so every color has a second identity. Or use the dedicated Contrast palette for color-vision-safe differentiation.

  • Nine distinct symbol shapes
  • Dedicated high-contrast palette
  • Five palettes in total
A live Color Sudoku board where each colored piece also has a distinct symbol
Symbol overlaysShapes reinforce every color.
A live Color Sudoku board using the dedicated contrast palette
Contrast paletteDesigned for clearer differentiation.

Make it yours

Five palettes. Light and dark.

Choose Rainbow, Contrast, Sorbet, Earth, or Vivid. Color Sudoku follows your device appearance and is built for both iPhone and iPad.

Color Sudoku settings showing light and dark appearance, five palettes, and colorblind symbols
Simple, useful controlsAppearance, palette, symbols, and game settings.
Color Sudoku running in dark appearance on Medium difficulty
Dark appearanceThe same puzzle, tuned for a darker screen.
The Color Sudoku victory screen with five stars and colorful characters

Available now

Available on the App Store.

Download Color Sudoku for iPhone and iPad. Play offline anytime with five difficulties, notes, hints, undo, and accessible color palettes.

Download on the App Store QR code to download Color Sudoku on the App Store Scan with iPhone Color Sudoku Get support Read the privacy policy