That's you projecting what I mean by "illegals", while I'm just using official terminology. I do not have an opinion one way or the other regarding the app's existence and motives.
(The law, I think, just uses the terms "illegal entry" / "unauthorized presence" / "inadmissible" / etc. and "illegal immigration" to describe the act in general. But USCIS, ICE, etc. do use the term "illegal alien.")
Again, as far as I think, being somewhere illegally doesn't make you any lesser of a human than I am. But they are still here illegally. I could call them undocumented too, but they're still here illegally.
I bet it's none, because you don't see that as a defining characteristic of yourself.