StudyCards +

Flashcards are a great study tool. With StudyCards +, you can count on acing all your tests, while eliminating paper and ink waste. 
StudyCards + is much more easily organized than old fashioned flashcards, is much more user friendly than other electronic flashcards, and by eliminating paper helps to save precious trees. Editing goes from a hassle to a breeze, and you can do much more than with plain notecards and ink, including adding pictures and sounds. StudyCards + can even read your flashcards to you.
If you have more than one device, then StudyCards + is even better for you, as all of your flashcards can be stored in iCloud, making them available everywhere. And with Handoff, you can start studying on one device, and continue hassle free on another.