What apps do Danes use to find shops instead of Yelp/Foursquare? I'm in Odense, which is the third largest city in Denmark. I try to find mobile phone shops and secondhand bicycle shops but the results which the mentioned apps give me are few and often come with no review. I suppose some other apps are used in Denmark or Danes simply use a different kind of platform to find shops?
As a Dane (actually living in Odense), I would use Google (including Google Maps) or ask a local of the city I was in. I would search using Danish terms such as "brugte cykler odense" in Google.
For bicycles, I don't know of any dedicated used bike stores in the city, but from my research, it does seem that a lot of the "normal bike shops" occasionally have refurbished used bikes.