title: Custom URL Scheme and http
body: <p>Using my iPhone i noticed that when i open a youtube link like <a href="http://m.youtube.com/" rel="nofollow">http://m.youtube.com/</a>..., this is redirect to the native Youtube app.
  I would like to do the same thing but using my custom url scheme, so i would like to have a custom url, if my app is installed in the device this is redirected in it, or if it's not installed, to do something else.
  I've tried to register as a custom url scheme the "http://" url scheme, but the is not listening for these urls.</p>
  
  <p>edit-</p>
  
  <p>I've already tried to register my custom url scheme, i want to use an html page, in that page i want to put my custom url scheme, but the problem is that i can't detect, from the web page, if the app is installed in the device</p>