NIS 2011? (3 user) and Ipad 2

I recently purchased NIS 2011 (i think) to replace Kaspersky product.

It has a 3 user license of which I have used 2 (one on my Toshiba and one on my son's Sony - both running Windows 7).

I have just purchased an Apple Ipad 2 for my wife.

 

Can I use the remaining license for the Ipad or do they use a completely different product?