This has to be the coolest app ever. Create a quiz on Quick Key and then you can print out a bubble sheet. Snap a picture of the quiz with your iphone and it will grade it for you! Wow. Just remember that if all you do is bubble in - you're probably not testing very well. Hat tip to Richard Byrne's Awesome Facebook page for this one! (Free Technology for Teachers)
Take notes out of evernote and put them into a flashcard maker. Although the best student notetaking software, I believe, is and continues to be One NOte - the incredible apps and evernote trunk are attracting students because of how they help them study.
The link up can happen and you can use studyblue to help you study on any type of device. I know this is memorization and "lower order" thinking but it is still a fact that it is part of learning today.