Sudoku Offline
by CleanBuilds
Classic 9×9 sudoku, calm and tactile. Works fully offline.
- Four levels, Easy to Extreme, graded by the techniques a puzzle needs, not by how many numbers it shows. Every puzzle has one solution.
- Hints that teach: a nudge first, then the technique, then the move. Plus a library of techniques with worked examples.
- Notes your way: pencil marks, corner and centre marks, colours.
- Zen games with no timer, score or mistake limit, whenever you want them.
- Light, dark and true black (easy on OLED screens) themes, and bigger text if you like.
- Free. Small banner ads keep it that way, and you can switch ads off any time, at no cost.