iFlipr turns your iPhone into a studying device by allowing you to practice flash cards directly on your iPhone. There are plenty of options for you to take advantage of, including the ability to download fresh flashcards from other users directly to your iPhone without syncing it up. If you're more interested in making your own flashcards, theres always the ability to do that as well.
This app is pretty smooth over all. It isn't anything fancy to look at, but if it was, would you really want to study with it? If you haven't yet registered for an account with iFlipr, you won't be able to upload or create your own flashcards. But if you search through their existing database or simple skim through the featured listing, you may find something that you could use some brushing up on.
When you load a specific flashcard set you'll be brought directly into the quizzing process. Touching the screen will flip the card over and reveal to you the answer to the question or in some cases identify the picture. You then have to select whether you or the person you're studying with got the question right or wrong, which it keeps a running total of for you.
iFlipr is really handy if you need to do some studying or have an eager mind that you need to entertain with fun facts and testing their knowledge. It's very situational, so you won't be randomly loading up flashcards to study on the way home from work, but it might be useful if you're looking to pass an entrance exam or help your 4th grader learn some math.