About
A calm, premium Sudoku experience
ZenSudoku was built on one belief: a great puzzle game should get out of your way. No clutter, no dark patterns, no account walls, just a beautiful board and the quiet focus of solving.
Designed for focus
The interface is mobile-first and deliberately minimal. Large tap targets, readable type that respects your device font size, and a refined look in both light and dark mode mean the game feels at home whether you play on a phone at night or a laptop at lunch.
Smart, honest hints
When you ask for a hint, ZenSudoku does not guess and it does not use AI. It applies the same logic a strong human solver would, spotting naked and hidden singles, entirely on your device. Nothing about your game is sent away to produce a hint.
Fair competition
Daily challenges give everyone the same puzzle, and leaderboards rank real, verified solve times. Ranked scoring is handled on the server so the board stays trustworthy, and you can still play everything for free without signing up.
Yours to keep playing
Puzzles generate locally, so the game works offline and loads instantly. Whether you are a daily-streak keeper or a weekend Expert solver, ZenSudoku is built to be the Sudoku app you keep coming back to.