There are numerous applications that allow you to print pretty much anything directly from your iPhone. Some applications require third party software running on a computer to fully function though. Below I describe three different applications that I use to print items directly from my iPhone or from my iPhone through a computer because each of these applications serve a different purpose. When possibly it is always easiest to print directly from the iPhone but I have yet to find a solid application that will print any type of document directly from the iPhone. Hopefully the below explanations will explain help you decide which application or applications are best for you based on price and functionality.