This app was mentioned in 2 comments, with an average of 3.00 upvotes
StreetFoodFinder has an android app, not sure if there's an iOS version.
https://play.google.com/store/apps/details?id=com.streetfoodfinder.streetfoodfinderapp
The website works on desktop and mobile as well.
StreetFoodFinder 'ere ya go.