Sudoku Saga app for iPhone and iPad

Sudoku, a puzzle game, test your intelligence! For free.

Sudoku is puzzling players all over world. Sudoku is easy to learn but a challenge to master.
There is really only one rule to Sudoku: Fill in the game board so that the numbers 1 through 9 occur exactly once in each row, column, and 3x3 box. The numbers can appear in any order and diagonals are not considered. Your initial game board will consist of several numbers that are already placed. Those numbers cannot be changed. Your goal is to fill in the empty squares following the simple rule above.

Features,
***4 difficulty settings;
***10000 levels;
***Special efficiency;
***Smart notes;
***Error checking;
***Hints;
***Share it with your friends.