Everyone keeps saying that it's a buyers market, and depending on how you feel about the real estate market, it is. Trulia is a real estate website that has just launched their own service specific app for the iPhone. Basically, all the functions of the website in an easy to use environment.
Trulia allows you to search for homes for sale in your area, by whether or not they're having an open house today, or if they're having one this weekend. You can of course change how far away you want to search as well. When you find that information it's listed out for you by all the houses in range from closest to furthest way from where you searched, giving you an idea of where everything is.
If that isn't enough for you, you can easily load it all up on a map. Just like the Trulia website, you can see a Google Maps read out of all the houses in your area. They drop a pin down for every house around you and you can easily select any of them and get more information.
You can email the listing to yourself, or contact the real estate agent right from the app, which is really handy if you want to go see it. There's also the ability to load the address up in Google Maps so you can get directions. Overall, if you're looking for a house and have an iPhone, you really should have this app. If you're not on the market to buy a house, the use of this app is kind of lost on you.