Is it possible to hide the address bar and status bar in iOS 7 Safari?
There is a method: &lt;meta name="viewport" content="minimal-ui”&gt;
(but it only works on iOS 7.1 - not on 7.0 nor 8.0)

source: StackOverflow 



More details, from iOS 7.1 beta 2 change log and release notes:


  Safari Notes
  
  A property, minimal-ui, has been added for the viewport meta tag key
  that allows minimizing the top and bottom bars on the iPhone as the
  page loads. While on a page using minimal-ui, tapping the top bar
  brings the bars back. Tapping back in the content dismisses them
  again.
  
  For example, use &lt;meta name=”viewport” content=”width=1024,
  minimal-ui”&gt;.




update: I confirmed this method works in iOS 7.1 (official final release).
You can confirm for yourself with my web app, which uses the meta tag solution described above.