Classic Sudoku Offline Puzzles app for iPhone and iPad

Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9x9 grid with digits so that each column, each row, and each of the nine 3x3 sub-grids that compose the grid (also called "boxes", "blocks", or "regions") contains all of the digits from 1 to 9. Each Sudoku puzzle has one unique solution.
This is easily one of the best and most beautifully designed classic Sudoku puzzle games and it is all free to download - no subscription required.

FEATURES
- Lots of offline Sudoku puzzles
- Four Sudoku difficulty levels (Easy, Medium, Hard and Expert)
- Sudoku Pencil Notes (auto-generate and auto-remove of Sudoku pencil marks can be activated)
- Auto-save of Sudoku game
- Both Cell-First and Digit-First input modes available
- Unlimited Undo/Redo of Sudoku entries
- Assists: Solve any cell you select when you are stuck
- Automatically show and remove errors
- Tonnes of other assists such highlight identical cells, differentiate locked cells
- Statistics to track your progress for each difficulty level showing number of Sudoku games played, win percentage, best and average times etc
- Dark mode
- Game Center (achievements, leaderboards and challenges)
- In-App Purchase to remove ads forever and get the ability to solve an unlimited number of cells
- Simple and elegant Sudoku User Interface