Sudoku puzzles offer an entertaining an effective way of exercising your brain and keeping your mind sharp. Training your brain with puzzles like this has been proven to reduce cognitive decline in elderly individuals, as well as improving overall cognitive function in men and women of all ages and from all walks of life. Whether you want to maintain the health of your brain or you're simply looking for a fun way to pass the time, you're sure to find something for everyone in today's list of the best sudoku apps for iPad.