An app allows you to group all the objects that are related to one project or process. This helps you organize and manage all your data, tables, DataPages (interfaces), authentication rules, styles, views, connections, and localizations.
All your apps are listed on the Home screen. Open an app to work on any of its objects. Additionally, objects from all your apps can be accessed in the All Assets area. With the exception of DataPages, you can share all your objects among multiple apps.