title: Effective Backend for Real Estate Application
body: <p>I am looking to develop a cross platform mobile app involving real-estate. I have looked at Zillow's API and I think that will be one of the API's I utilize. </p>
  
  <p><a href="https://www.zillow.com/howto/api/APIOverview.htm" rel="nofollow noreferrer">https://www.zillow.com/howto/api/APIOverview.htm</a></p>
  
  <p>My question is if I were to utilize their API as well as those of some other real estate sites, would it make more sense for me to call those APIs directly from the mobile applications, or would it make more sense to have a proxy server, possibly with my own databases compiled from these sites, that the mobile application would call? I have only read the basic overview of the Zillow API, but it looks like it is limited to 1000 calls per day. I understand it is a fairly general questions. If there are any more details that would help to make a better answer, please let me know.</p>
  
  <p>Also, if you know of any other free/cheap real-estate APIs, can you please provide them?</p>
  
  <p>Thanks</p>