Yelp is a great app for getting local knowledge on where to eat, drink and shop. You can easily find places nearby, read or add reviews and photos, and get directions,
Filters include price, distance, features such as outdoor seating and free wifi, and opening hours. Some places also provide offers if you check in.
There are some cool features. With Monocle, you hold the phone in a certain direction and it displays restaurants in that area, and Talk is a a forum where people get and give advice.