I have published my app on iOS Appstore. To show smart banner I use following code on my webpage.
<html>
<head>
<title>Kinjal's Games</title>
<meta name="apple-itunes-app" content="app-id=6444216110, app-clip-bundle-id=com.kinjal.brainbooster"/>
</head>
<body>
Yo
</body>
</html>
When I load webpage, it shows banner for 1 sec and then disappears immediately.
To verify, I tried by using other app's Appstore id. If I try using facebook's app id, it works.
<meta name="apple-itunes-app" content="app-id=284882215, app-clip-bundle-id=com.kinjal.brainbooster"/>
But it doesn't work only with my app id
<meta name="apple-itunes-app" content="app-id=6444216110, app-clip-bundle-id=com.kinjal.brainbooster"/>