Programs I've bought before for my PC (say, around the year 200) don't work now, necessarily. Heck, Macs have a huge bit with going on (Lion dropped OSX's compatibility for older architecture based programs)
they are a freak show with their updates for which you have to pay, simply because you upgrade to a new OS. Their stuff works, but so do thousands of apps you do not need to pay for again... disgusting sharks...
i only used truprint for a few months... and then they pull the plug... bastards
When I cared for printing from my iPhone I used to use an app store app to do it when I was not jb. Can't remember the app or if it even exist anymore though. Maybe try finding one in the apple app store.