Dropbox scoped-app folder: Visibility of uploaded files to other users

When using the "app folder" access type, each user gets their own separate app folder in their own account when they authorize the app to connect to their account. The app folders for different users of an app do not sync with each other.
 
Also, currently, app folders are incompatible with shared/team folders, meaning you can't share an app folder, put a shared/team folder inside an app folder or put an app folder in a shared/team folder.

If you want all users of your app to connect to the same content and have that sync across users, you'd instead need to register and use an app with the "full Dropbox" access type and invite all of the users to a single shared folder or team folder. Apps with the "full Dropbox" permission don't get app folders, and can instead access anything in the connected accounts, such as shared/team folders.