SolDoKu - Solve your Sudoku

Is there a sudoku that won't work out for a long time? Are you curious if the sudoku you solved is the answer?
Here is an application to solve the problems.
If you take a picture of the sudoku problem, you will be able to tell the sudoku's answer within five seconds.
-The app supports the following languages:
-English, Hangul, Simplified Chinese Character, Traditional Chinese Character, Japanese, French, Spanish, German, Italian