This product used to be called Airprint activator, but has recently changed it's name to handyPrint. This is a software application that you have running on your mac that allows you to print from your iOS devices on normal printers that are not "AirPrint" enabled.
This could be handy if you do want to print, and your current printer is still functioning correctly, now you have no need to upgrade your printer. This will give you that ability. The only downside would be is that you have to have your mac running all the time in order to use the software.
So if you are needing to print from your iOS devices, and you don't want to upgrade your hardware then you may want to look into handyPrint. One thing to note is this software is Free(DonationWare) so if you do like it and use it then it may be worth dropping them a couple of pounds.
I am always interested in your thoughts so if you have any comments or feedback then please feel free to add any comments, or you can mail me here.