How do I purchase multiple copies of iRa?

Or can I install iRa on more than one device?

You may install iRa on more than one iPhone or iPod as long as: you own the device, it will be for your personal use only, and you will not be using the application simultaneously on multiple devices.  If you want a copy for another user, you must purchase another copy.  This is fairly straightforward for individuals.  Each user needs to purchase iRa with their own iTunes account, and then sync their device with their computer.

Unfortunately, because of the way iTunes works, it can become somewhat complicated for businesses that wish to buy multiple iPods, install iRa on them, and deploy them to their employees. In this scenario, we recommend you upgrade to iRa C3.

If you want to stick with iRa Pro or iRa Direct, the easiest way to do this is to create an iTunes account for each end-user of iRa.  Each user should then log into iTunes on their own computer to purchase and download iRa.  They can then sync their device to their computer to install the application.  If each end-user does not have their own computer, you can instead have one computer on which each end-user has their own separate (system-level) user account.