"Researching homes and house-hunting is inherently a mobile experience," said Rich Barton, Zillow co-founder and CEO. "The GPS-enabled iPhone untethers our Zillow users from their computers and puts the power of our database of 88 million homes in their hands when they need it most - while they are looking at homes."
Zillow, launched in 2006, currently offers estimated home values, home details and historical data on 88 million U.S. homes, about 95% of all homes in the country. The service has become one of the largest U.S. real estate websites: it recorded more than 8.8 million monthly unique visitors in March 2009, a 71 percent year-over-year growth.
For more information watch the video (made by Zillow) below: