Kakuro and Calcudoku for iPhone.

Two classic number puzzles in one calm app. Fill the grid so every sum adds up. Play a new puzzle of each type every day.

Coming soon to the App Store

Free: one daily Kakuro, one daily Calcudoku and unlimited Easy puzzles. A one-time purchase of $4.99 (US price) unlocks Medium, Hard, Expert and the daily archive. No ads. No account. No subscription.

Kakuro

Put the digits 1 to 9 in the white cells. Each run of cells adds up to the clue beside it. A run never uses the same digit twice.

Calcudoku

Each row and column holds each number once. Each outlined cage must reach its target number with the math sign shown: add, subtract, multiply or divide.

Screenshots

Screenshot coming soon: solving a Kakuro grid
Screenshot coming soon: a Calcudoku grid with cages
Screenshot coming soon: the daily puzzles and your streak

A daily puzzle, free

A new Kakuro and a new Calcudoku every day. Everyone gets the same puzzles. Keep your streak going.

Four levels

Easy, Medium, Hard and Expert, in several grid sizes. Every puzzle has exactly one solution.

Tools that help

Pencil marks, undo and redo, a timer, and mistake marks you can turn off. Leave a puzzle and pick it up later.

Plays anywhere

Works offline, with no internet needed. Supports dark mode and VoiceOver. Menus follow your text size.

Fair price

No ads and no subscription. Pay once to unlock everything, or keep playing free.

Private

No account. Anonymous usage data only, and you can turn it off. Read the privacy policy.