If anyone is looking for a replacement tool to see nearby Wikipedia pages, we recently built this in as a permanent feature, accessible at:

https://en.m.wikipedia.org/wiki/Special:Nearby

This is in the site navigation on mobile web and it's accessible on desktop. The official Wikipedia apps also have a nearby feature as well, but I wouldn't recommend you use them to be honest. Our mobile web view is much faster, and allows you edit, upload photos, watch pages, etc.