iCloud: Supported system requirements System requirements for your iPhone, iPad or iPad Touch   * iOS 5 System requirements for your Macintosh Computer * OS X Lion 10.7.2 * iTunes 10.5 * iPhoto'11 (version 9.2) or Aperture 3.2 (for Photo Stream) * Safari 5.1.1 or later (for Bookmarks) PC Requirements * Microsoft Windows 7 or Vista (Service Pack 2 or later) * iCloud Control Panel 1.0 * iTunes 10.5 * Outlook 2007 or 2010 (recommended for Contacts and Calendar) * Internet Explorer 8 or later (for Bookmarks) Close Window