Microsoft has released a new SkyDrive Pro
application for iOS users that runs on the iPhone, iPod touch, and iPad universally. Notably, the application is separate from Microsoft's existing SkyDrive application
in the App Store, which is also free.
The SkyDrive Pro application is free, but of course, you will need to be paying for a SkyDrive Pro or SharePoint account prior to downloading the application in order to use it