Real estate website Zillow said today it has launched a free app for Reasearch in Motion’s BlackBerry smartphones.

Zillow said the addition of the BlackBerry app, along with its existing apps for Android, iPhone, and iPad, means more than 90 percent of smartphone users can now access real estate information on more than 100 million properties.

The location-based Zillow BlackBerry App uses GPS technology to find and follow users on an aerial map, and displays Zestimate home valuations, homes for sale, homes for rent, Rent Zestimates, Make Me Move listings and recently sold data on the homes around them. Additional features on the Zillow BlackBerry App include:

*Multiple search filters that include price, number of bedrooms and bathrooms and other home-related information.

*Homes viewable on a map with high-resolution satellite and street view.

*Home search by location or by typing in a city, ZIP code or address.

*Full-screen color photos of homes.

“With this launch, real estate agents will also have access to the app used by so many of their clients,” said Spencer Rascoff, chief executive officer of Zillow.

“Fifty-nine percent of agents tells us they use their smartphone to preview for-sale and for-rent properties with clients on the go.  Among real estate agents, the BlackBerry (36%) and iPhone (22%) are the top two smartphone brands.”