The download button opens the iTunes App Store, where you may continue the download process. You must have iTunes installed with an active iTunes account in order to download and install the software. This download may not be available in some countries.
OneDrive (formerly SkyDrive) is the one place for everything in your life. Easily store and share photos, videos, documents, and more. When you upload photos or videos from your iPhone or iPad to OneDrive, you can get to them when you're on your PC, Mac, tablet, or phone. With OneDrive for iOS, you can easily get to, manage, and share files on the go:
Automatically upload photos and videos to OneDrive using Camera Backup.
Browse all your OneDrive files and files shared with you.
Share files by sending a link in email or getting a link to copy and paste.
Move, delete, and rename files, and create new folders.
Open your OneDrive files in other apps, including Office Mobile for iPhone.