The Chicago Food Truck Finder locates food trucks in the City of Chicago. Not only does it show where food trucks are currently, but also shows where food trucks are going to be throughout the day.
The app has a list view, which shows what food trucks are open now and what food trucks will be open later. The results are sorted by distance from your current location (If location is not known or access to the GPS device is not permitted, then list will be sorted by name). The app also has a map view, which shows a map of the currently open food trucks. Both views allow you to see more information about any particular truck. This includes the food trucks social media information, website, and schedule for the day.
Results are cached locally, so if you run into a connectivity dead-zone, you will still be able to find the food trucks.