There are plenty of apps for which geographic vicinity is crucial to the service they provide: meetup, yelp, uber... apps for which the end goal is for the user to interact with, or obtaining information about, something/someone close to him/her.
To be fair, the description of this app it's so vague that it's hard to see how distance would affect its users.
"Already seen too many cats on there for one day though. One is too many."
Well, that's the fatal flaw of this recurring "let's build a local social network!" idea... if you wanted to indiscriminately talk to people all around you in your area, you already would be. By and large, you don't have every neighbor on your Facebook because you don't really want them there.... I still haven't seen a compelling use case that isn't based largely on wishful thinking or nostalgia (often for eras not lived in by the nostalgia-ee that may or may not even have existed...), rather than being based on some sort of witnessed need.
To be fair, the description of this app it's so vague that it's hard to see how distance would affect its users.