Three game modes
Move between Classic, sum-cage Killer, and irregular-region Jigsaw Sudoku.
CLASSIC · KILLER · JIGSAW
Clear your mind, one number at a time.
A calm, focused Sudoku experience with three ways to play and five thoughtfully tuned difficulty levels.
Fresh puzzles No account required iPhone and iPad
Explore OneStop Sudoku 
FOCUSED BY DESIGN
Everything you need. Nothing you don’t.
Familiar tools, original puzzles, and a quiet interface built to keep your attention on the next number.
Five difficulties
Beginner through Expert levels let every player find the right challenge.
Meaningful scores
Difficulty-weighted scoring rewards clean, quick, and complete solving.
Made for any hour
Switch to Night Mode for a comfortable board during low-light sessions.
Fresh every time
Puzzles are generated on your device and checked for a single solution.
No account required
Your saved puzzles, settings, and progress stay on your device.
ONE APP, THREE PUZZLES
Choose how you want to think.
Classic
The timeless 3 × 3 Sudoku grid.
Killer
Use cage sums with no repeated digits.
Jigsaw
Follow nine connected irregular regions.
PLAY WITH PEACE OF MIND
A straightforward game with straightforward support.
Find gameplay help, contact information, and a clear explanation of how on-device progress and advertising data are handled.