Sudoku, distraction-free, with the challenge tuned just right
Puzzles generated on the spot, hints whenever you need them, and 14 visual themes to play your way. Free, right on your Android device.
Built for people who like to solve
Minimalist visuals, solid mechanics — nothing gets in the way of the board.
Uniquely solvable puzzles
Every board is generated on the fly with backtracking and a uniqueness check — no broken puzzles, no multiple solutions.
Three difficulty levels
Easy, Medium, or Hard. Pick the challenge that fits your pace.
Pencil-mark notes
Jot down candidates in any cell with notes mode, just like you would on paper.
Smart hints
Stuck? Ask for a hint and the app finds the easiest move to justify on the current board.
Highlights and conflicts
Row, column, and block highlighting, with repeated numbers flagged instantly — mistakes stand out right away.
Undo and timer
Take back a move whenever you need to, and track your solving time on every game.
14 themes to choose from
Three free themes right away. Unlock the other eleven by playing, with coins earned from solving puzzles.