I like the idea but kinda worried it could be stalkerware.

I definitely see how swiping can be depressing, but when you cross paths with somebody IRL and things go south you might be in a situation where you might not want to ride the bus because you want to avoid that person.

Like many things like that there is also a density issue. It is one thing to promote it in a dense and tech-heavy area like the bay, in the rest of the country getting above critical mass could be harder.