See form9 in action

form9 is a calm, number-free sudoku you solve with nine shapes instead of digits. Here's a short clip of a daily puzzle being played — then grab it free on the App Store.

form9 gameplay — a daily puzzle solved with shapes (23s, no sound).
Download form9 on the App Store

Free · No ads · No tracking · Plays offline

A look around the app

  • A form9 puzzle in progress — a 9×9 grid filled with shapes instead of numbers. Sudoku, with shapes
  • A medium form9 board mid-solve — number-free sudoku played with nine shapes. A whole new challenge
  • The form9 daily challenge screen with a streak and five difficulty levels. One fresh puzzle a day
  • The form9 daily archive calendar — replay any past day to keep a streak alive. Keep your streak alive
  • Finishing an Easy form9 puzzle — the score breakdown sheet. That feeling when it clicks
  • A form9 board in dark mode — the same logic, a tougher grid. Tougher than number sudoku
  • A form9 board with dark mode and the optional colour hint turned on. Make it yours — dark mode
  • form9 statistics — total score, day streak and best times per difficulty. Watch yourself get good

What's inside

  • Number-free. Nine shapes — circle, square, triangle, slash, diamond, star, plus, ring, heart — instead of digits. Same logic, no arithmetic.
  • A fresh daily challenge with streaks, plus five difficulty levels from Easy to Master.
  • Replay any day from the archive and beat your old score.
  • No ads, no tracking, fully offline. Nothing follows you while you play.
  • Built to be calm and accessible — shapes read clearly without relying on colour.

New to it? Read the benefits of visual sudoku or browse all articles.