title: How to prompt user to download app when visiting product page?
body: <p>Recently I was browsing a website from my iPhone and it prompted me to download their app at the top of the browser.
  We are also having same kind of app in iTunes and wants our users to see the notification same as theirs. Attaching a screen-shot.
  Anybody suggest how is this achieved?Through some script or plugins.
  Help us to integrate this.</p>
  
  <p><a href="https://i.stack.imgur.com/PeXhO.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PeXhO.jpg" alt="enter image description here"></a></p>