Cram for tests on your iPhone

(Credit: CNET Networks) Add 'study guide' to the long list of tricks you can do with your iPhone. Cram ($9.99) is a solid application that lets you create and import tests on any topic. You'll be able to take scored multiple choice quizzes or go into study mode, in which Cram provides you with a series of digital flash cards. Cram will flash the question and you decide with a click when the answer appears. Cram is fairly simple to use, but there is a correct order for getting started. For inst