The answer is no, you can't use the application on iPads since this is an exclusive Windows application that was designed to facilitate the downloading of custom fonts for the Zebra printers. I've checked the official website and all the images that appear there indicate that the software was released only for Windows.
In case you want to obtain an official response, visit the following page and fill the form with your details, then someone from the company should reply to your inquiry: http://online.zebra.com/Contact-ENU