2. EasyBib

If you find that college is bringing you lots of essays to write or other things where you have to cite the references, then get EasyBib. This great app creates citations in all of the common styles: MLA, APA and Chicago styles. All you have to do is scan the book UPC code with your iPhone or type in the title to get your answer. You can also use the app to email and/or export the bibliographies to yourself so you can type them into your term paper or other essays at your leisure. No more problems looking up citation rules or worrying you got it wrong with EasyBib!