Two things...
1. You cannot "share" a license. It's not fair to the developer.
2. You can easily access and download IM+ from the Everything Q Software Store. Just visit
http://www.everythingq.com from your Q. Click on software and you'll enter the store. Both the site and the software store have mobile sites. You should be able to locate and download from there. Another option is to "Send to Q". Just visit the
IM+ page and select Send to Q. You'll receive an SMS message that includes a link to download the app directly to your Q.
There is a free trial, so you can register if it meets your needs. Hope this helps.