To try and put it a little more nicely: there aren't any apps or anything similar right now to help you find fellow zoos because nobody wants to advertise their location to others potentially looking to do harm. The only thing remotely similar is the personals section where people will put down their general location so people can look to see others close to them. But ultimately even those that want to meet up with others, it'll still take a very long time of getting to know them, upwards of years just to gauge what they hope is authenticity.
The reason for all this is that, especially for owners, if they gauge incorrectly, they can have their entire lives taken away, they'll likely be jailed, their companions taken away from them and potentially euthanized, and possibly barred from having pets ever again.