MapXplore is a free app that has been available on the Apple app store for three years and has been downloaded almost 3000 times.

The application shows Wikipedia entires around a selected location. This can be the current location, or selected with an address search, or by dropping a pin anywhere on the world map. Individual Wikipedia entries can then be selected, and explored through a number of linked data sources.

The app displays comprehensive information about the Wikipedia articles with such a geo location, including photos, the wikipedia article itself, maps, and RDF (resource description framework) data from linked data providers like dbpedia and freebase. All users will appreciate the Wikipedia articles and photographs, but more adventurous users can explore RDF (semantic links) by clicking the displayed links.