cab4me - (iPhone & iPad) "lite" version is free
Find or call a cab from your phone/tablet
Only cab finder using uses area the cab company serves
Trailblaze Chicago - (Android) free
Records and anonymously reports your tracks
Provides dashboard with distance, speed, and map
Chicago Burger Bible - (iPhone & iPad) free
Map of reviewed burgers by location, rankings and reviews
Many pics of the burgers by restaurant
sitorsquat - (iPhone & iPad) - free
Find public restrooms near you on the go
Search, view, rate and add public restrooms