Vocab Junkie is an iPad app from Brainscape. I learned about Brainscape early this week on Larry Ferlazzo’s excellent blog. Vocab Junkie features more than 800 vocabulary flashcards. Like any flashcard application the cards present one word at a time. To get the definition tap the card to read it. After reading the definition and sample sentence rate your understanding of the word. Over time the app learns the words that you know better than others and shows you the words you don’t know more often than those you do know.