Index: src/wp-admin/includes/class-wp-press-this.php
===================================================================
--- src/wp-admin/includes/class-wp-press-this.php	(revision 33515)
+++ src/wp-admin/includes/class-wp-press-this.php	(working copy)
@@ -1318,6 +1318,27 @@
 
 		/** This action is documented in wp-admin/admin-header.php */
 		do_action( 'admin_head' );
+
+		$web_app_meta = array(
+			'apple-status-bar' => '<meta name="apple-mobile-web-app-status-bar-style" content="black">',
+			'apple'            => '<meta name="apple-mobile-web-app-capable" content="yes">',
+			'chrome_android'   => '<meta name="mobile-web-app-capable" content="yes">',
+			);
+		$web_app_meta_output = '';
+		/**
+		 * Filter the default web app meta tags for Press This.
+		 *
+		 * Default keys are 'apple', 'chrome_android' to enable mobile view on the respective OSes and 'apple_status_bar' for the iOS status bar color associated with the app..
+		 *
+		 * @since 4.4.0
+		 *
+		 * @param array $web_app_meta Associative array of meta tags to enable mobile web apps.
+		 */
+		foreach ( apply_filters( 'press_this_app_meta', $web_app_meta ) as $meta ) {
+			$web_app_meta_output .= $meta;
+			$web_app_meta_output .= "\n";
+		}
+		echo $web_app_meta_output;
 	?>
 </head>
 <?php