Mathdoku

iOSAndroid

Sudoku meets math.

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About

Mathdoku is a number logic puzzle for people who like Sudoku but want a little arithmetic in the mix. Fill every row and column with the numbers 1 to N, with no repeats, then make the cages work: the numbers inside each thick-bordered group must add, subtract, multiply or divide to hit its target. 336 hand-picked puzzles take you from 3×3 to 9×9, and every one has a logical path to the end — no guessing required. No ads, no account, fully offline, in light or dark mode and in 19 languages.

Features

336 puzzles, seven grid sizes

Start on a 3×3 and work up to 9×9. Each size has 48 levels sorted from easy to hard.

Four operations, one at a time

The first levels use addition only, then subtraction, multiplication and division join in, so the difficulty ramps up at your pace.

Notes, hints and undo

Pencil in candidates, get three hints per level, undo and erase freely, and see mistakes in red the moment they happen.

No ads, fully offline

No account and no internet needed. Your progress is saved automatically on your device, so you can pick up where you left off.