Here's just one quick example:Okay, I did some research like you suggested.
There may be some anecdotal use of the term "app" before the iPhone (none of which I can easily find using Google, point me in the right direction if you can), but never was it a standard term used by any major tech company.
This mode lets you show more apps on one screen using little icons. Only the built in apps have the correct mini icons. All your other apps use a generic little diamond like icon. You can also create categories for the applications. A pulldown menu lets you switch between categories. The memory app is now hidden in the launcher menu under Info.