updated 07:20 pm EST, Wed February 29, 2012
Foursquare customizes OpenStreetMap
The changes came after Google started changing the pricing for companies to use the Maps API, possibly making it less practical to use. Deeper changes would also be possible, Foursquare hinted. Mobile apps are still using the underlying map framework of each platform, whether Google Maps on Android and iOS or Microsoft's own Bing on Windows Phone.
OpenStreetMap is already used by a number of free or low-cost GPS apps and, on iOS, can serve as a way of getting free turn-by-turn navigation that Android includes with Google Maps Navigation. It has only seldomly seen mainstream adoption, and the Foursquare deal is a significant coup for the community-driven service.