This app was mentioned in 11 comments, with an average of 1.73 upvotes
These are the ones I use:
Yelp: Food, Shopping, Services Nearby:
https://play.google.com/store/apps/details?id=com.yelp.android
Zomato - Restaurant Finder and Food Delivery App:
https://play.google.com/store/apps/details?id=com.application.zomato
Yelp was much more popular in Germany before TripAdvisor came along. Although most reviews are in German, it has often more of them... https://play.google.com/store/apps/details?id=com.yelp.android