I am not sure if it was officially announced today, but it looks like you can now experience Citysense by Sense Networks on your iPhone… well at least if you live in San Francisco anyway, and if you don’t live in San Francisco you can still load it up and play with the app just to kick the tires. Definitely worth checking out.

I came across Sense Networks last summer when they arrived out of stealth mode and think they’re potentially doing some of the most interesting and exciting stuff in LBS… out of the 212 nonetheless (+40.7-74 didn’t seem as catchy)! take that left coasters!

What the heck do they do you may ask? Well rather than just pasting the long description from their about us page, here is the twitter inspired version: they collect, process and analyze (in real time) anonymous data on the whereabouts of a ton of location aware devices (phones, navigation devices and sensors) in order to uncover useful information related to patterns of historical location data.

Sounds cool huh?!

So, you know how when you go to Amazon to buy a book, and you get the’people who bought that book, also bought this book’? Well on one level Sense Networks is trying to do that for everyone as they traverse the streets that is their city or town… folks that go to the Statue of Liberty, might also like the Empire state Building (aka tourists), folks that go to the meat packing district on Friday nights, might also like Alor Cafe in Staten Island for brunch on Sunday (aka the bridge and tunnel crowd)… you get the idea.

Since I don’t live in SF and don’t know the area very well it’s hard to really tell exactly what the iPhone application can and can’t do at this point, it’s being positioned as a nightlife finder… so presumably if you’re looking to head out to a bar and want a better idea of where and when to go, a quick consulation of CitySense can let you know that Cantina on Sutter is hopping right now, but Lion Pub on Divisadero, well not so much… by the way Sense Networks folks, those Google and Yelp points of interest really need to be layered directly over the map, it would make a huge difference in helping users get their bearings!

But more than anything the CitySense nightlife finder application seems to be more about creating a tangible and visible showcase for the Sense Networks business and technology…but thinking about what’s happening behind the scenes and how it could be used in a variety of applications is where it indeed gets quite interesting.