I meet plenty of people who want to print from their iPad or iPhone but can't. Sure there are apps that promise to allow this function but at the end of the day I find what's wanted is just a simple solution, I have tried the some of the apps with limited or no success and in the end have just recommended the purchase of a new HP printer with e-print and "apple air print" technology. The advantage of this is that once you have set it up all you have to do is attempt to print from your iPhone or iPad and instead of the "no airprint printers found" as shown below you will find in the list your new printer.
These printers can be purchased from around £40 in their basic form and ink refills are as little as £19 for a set of colour and black. There is absolutely no software to install on your iPhone or iPad, it will simply print.
