For those who have not heard of it Zillow is the online housing database that gives potential home buyers and renters access to home price value through their clever Zestimate factoring which in turn gives a Zillow Home Value. An immensely useful tool for those in the market for property and not surprisingly now a top iPhone app.
Zillow iPhone App
Find all the details of the immensely useful Home Finder app on the Zillow Website.
Like many websites brought to the iPhone screen it adds an extra dimension to physical searching of potential accommodation or might even be simply used to satisfy your curiosity as to how much a house is worth. It also adds the obvious practicality of finding whether a homes rent is too high (do you really want to have to share with a roommate because of a steep price?) or indeed whether you're looking to rent by owner and your price is too low,
As for extra functionality unique to the iPhone app , you can quite happily use the Zillow real Estate app to search for homes using GPS.
As you're already linked to a well regarded and proven website it's no wonder that so many are turning to the Zillow app to satisfy their real-estate needs.