Cloud storage service Box.net has released an update to its universal app for iOS devices adding iOS 4 support and the ability to access files offline. The new version allows users to designate specific files to be saved locally on the device for offline access and later sync those saved files with updated versions when others make changes. The update also adds file caching to allow for faster previewing of files, makes several user interface tweaks to both the iPad and iPhone UIs with regard to sharing and viewing content and provides iOS 4 support with fast app switching and high-resolution graphics for the iPhone 4 Retina Display. Box.net is available from the App Store as a free download. A Box.net subscription is required in order to use the app; a free subscription is available which includes 1GB of storage and a 25MB file size limit, with paid subscriptions ranging from $10-15 per user per month for up to 15 GB of storage. Enterprise subscription plans are also available for larger organizations.