IPAD

To make your iPad application stand out, concentrate on ways to amplify the user experience, without diluting the main task with extraneous features.

****In general, focus the main screen on the primary content and provide additional information or tools in an auxiliary view, such as a popover. This gives people easy access to the functionality they need, without requiring them to leave the context of the main task.

Use a navigation bar in the right pane of a split view to allow people to drill down into a top-level category that is persistently displayed in the left pane. A split view flattens your information hierarchy by at least one level, because two levels are always onscreen at the same time. For example, Settings displays device and application settings using a navigation bar in the right pane of a split view.

Use a popover to enable actions or provide tools that affect onscreen objects. A popover can display these actions and tools temporarily on top of the current screen, which means people don’t have to transition to another screen to get them. For example, Mail in portrait orientation uses a popover to display the account, mailbox, and message list hierarchy.