The tone of the Yelp campaign is dark and more comical but also more personal because its showing people in different scenarios that they can relate too. This is geared towards people around 18-30 rage range people that deeply engrossed in technology. The style of the campaign draws attention to the exaggeration of the situation like bad dinning experience. The ridiculousness of the commercials also leaves a memorable impression about the app.
The Foursquare campaign has a much brighter environment while using a comparison method all in one shot. The style of the images show the interests of the people in the photo and press the fact that foursquare will give up results to places you from your likes and preferences. In both of these ads they both include phones trying to get people to relate back to the application.