Creator here! I'm really sorry about having to do this, but this is the only way to make it work so far, since we can't get Tinder app tokens; after the initial authentication, the server only works as passive proxy for traffic to Tinder. If there's another way, let me know, and I'll gladly implement it.
let us run it locally?
This doesn't work with a web application, as we need to request a token directly from the FB API which would check for the URL to match the approved URLs for Tinder.