Documents are the primary way of saving data for apps. You can share the document with various apps and users so that the data is available to all users, but there are other ways to store and manage data in an app. Documents are the workhorses because you can control how much data is saved and how it is saved and shared.
Since the beginning of the iOS and macOS systems (and their predecessors) there has been another set of tools that let you store data. These tools are commonly used for user defaults, settings, and preferences. The ...
