title: How to redirect from Mobile Safari to Native iOS app (like Quora)?
body: <p>On my iPhone, I just noticed that if I do a Google Search (in Mobile Safari) and select a result on quora.com, the result page launches the native Quora app on my phone. </p>
  
  <p>How is this done? Specifically, is it a detection of the user agent and the use of an iOS URL scheme? Can it tell if the native app is installed and/or redirect to the app store? </p>