iphone - How To Detect If User Has iOS App Installed In Browser - Like Example Site In Post -


i wondering how site detected have ios app installed when visited web site on phone.

http://drafthouse.com/austin

enter image description here

sites can implement safari smart app banners. see apple's documentation details:

promoting apps smart app banners

it done via this:

<meta name="apple-itunes-app" content="app-id=myappstoreid, affiliate-data=myaffiliatedata, app-argument=myurl">

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