Quoxxo

Quoxxo is a clean, quiet binary logic puzzle. Fill every square in the grid with an X or an O until the whole board obeys three simple rules — then share it, or race a friend on the exact same puzzle.

If you enjoy Binairo, Takuzu or other binary logic puzzles, Quoxxo will make you feel right at home.

THE RULES

- Never three of the same symbol in a row or column

- Each row and each column holds an equal number of X's and O's

- No two rows are identical, and no two columns are identical

Every puzzle has exactly one solution. There's no guessing — just logic.

THREE SIZES, PLUS A DAILY

- Easy — 6×6 grid

- Medium — 8×8 grid

- Hard — 10×10 grid

- A new Daily puzzle every day, the same board for everyone

RACE A FRIEND — NO SERVER NEEDED

Every puzzle has a 7-character code. Send it to a friend and you'll both get the identical grid, so you can see who solves it faster. No account, no login, no server. Just a code.

BUILT TO RESPECT YOU

- Pay once — no ads, no in-app purchases, no subscriptions

- Completely offline — the game never needs the internet

- No accounts and no sign-up

- No analytics, no tracking, no data leaves your device

- Scores stay only on your phone

MADE YOUR WAY

- Optional real-time error highlighting while you learn

- Show or hide the timer

- Choose your tile colours

- A local scoreboard of the puzzles you've solved

Quoxxo is made by Redders IT — small, focused puzzles that respect your time and your privacy.