About the app

KenKen is a grid puzzle: each row and column uses the numbers 1 through N exactly once, and each outlined cage has to hit a target using addition, subtraction, multiplication, or division.

What's in it

• Grid sizes — 3×3 up to 9×9
• Three difficulties — easy, medium, hard
• Resume where you left off — in-progress games save automatically
• Undo and redo — for when you paint yourself into a corner
• Notes mode — pencil in candidates before committing
• zen stats — optional completion times and breakdowns by grid size (one-time unlock)

What it isn't

No daily streaks, no social features, no push notifications asking you to come back. Just puzzles.

The interface is dark and mostly quiet. Haptic feedback on taps if your phone supports it.

Built by Matthew Caminiti. Questions or bug reports: matthew.z.caminiti@gmail.com.