About Study Desktop
Your personal tutor: Using a clever approach it takes care of scheduling card repetitions for you. Other flashcard software may require you to grade your answer. But this will soon become rather tedious – after all, you should focus on the topic. Study Desktop on the other hand will adapt to your progress using a spaced repetition model based on psychological and pedagogical research. If you give a wrong answer, it will prioritize the card for future exercise (and you will also have to repeat the card the following day). Consequently, if you provide a correct answer, the card will get a lower priority. Study Desktop is designed so you can use it both together with Study Mobile on your iPhone and alone.

Read more: http://www.apple.com/downloads/macosx/home_learning/studydesktop.html