Sudoku For app for iPhone and iPad

There are tons of Sudoku apps out there, but I wanted to make one especially for my Wife (a Sudoku addict).

I studied the various apps that were available, observed my wife playing, and built this app. It contains these features and options:
- 500 Free puzzles (upgradable to 10,000.)
- Pause and resume puzzles any time.
- Stats, stats, and more stats.
- Timed and untimed play (for a stress free experience.)
- Box, cell, row, and column solvers in case you get stuck and need a push in the right direction.
- Show mistakes (answers and hints/pencils.)
- Row and Column highlighting for clean visual cue.
- Auto-pencilling mode (let the game pencil in the remaining possibilities for you).
- Hint Trick that makes hints/pencils show clearly that only 1 or 2 choices remain.
- Night Mode to save on eye-strain.
- 10 Color themes.
- 12 customizable titles (If you are giving this to someone you care about, why not customize it for them.)

Since you are not my wife, for you, this game is free to play, once daily. Sorry...

However, if you want to play it more frequently, or if you run out of puzzles, you can upgrade the app at any time through in-app purchases. Thanks for your support!