[jimmyff]

It's the name that appears on your phone/device if you have the app installed. This can differ from the app store title which is often more verbose.

[johnisgood]

> your on-device title does not reflect your app’s functionality.

So you cannot just give it any name, it has to reflect the app's functionality? That is weird. I have a project that is named X, but from that alone you cannot tell what it does exactly. It is impossible to give it a name that would do that.