BodyCount App is a free app with an available business in-app purchase that lets you see how many people are at a certain bar, restaurant, gym, etc.
Just search the business name and instantly sees whos at the venue, post pictures or video, and comments and share them with others on Facebook or Twitter.
Businesses can manage their page by unlocking the business features with the in-app purchase. This will give you access to a "Promotions" section that allows you to update the number of persons at your venue.
Update special deals and promos to attract more users to your business. Display a share on Facebook button for more exposure. Access your own page, upload photos and video, and even talk to your customers for that added edge.