Check in Apps (Yelp!, Foursquare and FB)

Is there an app out there for Check-ins? Id like to have an app that would check-in to Yelp, Foursquare and maybe even FB all at the same time! So I don't have to open one app after another. I'm a huge Yelp! fan and I really enjoy using foursquare with friends...Any advice for anyone? Is there such an app out there?

I guess no one has made such an app. No good >< Oh well.

I would totally go for an app like that...my business does social media marketing, and so in order to determine the best strategy for each client I really need to be active on all 3 and its a pain!