I assume you mean for personal use so moved this to Home > Mobile for better support.
The product page is here: http://home.mcafee.com/store?CategoryId=Mobile
Decide for yourself. Coverage varies widely depending on what mobile product you are wanting to protect.
For instance, Apple puts a lot of restrictions on security apps, if it's an Apple product.
For Android and Apple you can only use whatever is available in the Apps Store.