Just as any online content producer or web site owner is hungry for metrics about their web site, iPhone application developers are bound to want the same types of facts and figures surrounding the usage of their programs. New York City-based startup Pinch Media, which has received an undisclosed amount of funding from Union Square Ventures, First Round Capital and a handful of angel investors, offers iPhone SDK developers free code that gives them analytics based on unique users, active users and length of time the application is in use.

Not only has Apple has sold roughly 5.4 million iPhones to date, but it’s working hard to get the device into as many people’s hands as possible, launching it in country after country around the globe. At this point, it’s hard to gauge how large this market could become.

And with the iPhone SDK coming out in June at Apple’s Worldwide Developer Conference, we’re about to see an explosion of apps being offered by mobile developers. Indeed, as the iPhone ecosystem continues to evolve, startups that offer tools such as Pinch Analytics are going to be really valuable.