diff --git a/js-assembler/package.rkt b/js-assembler/package.rkt
index a932cd6..1e6088a 100644
--- a/js-assembler/package.rkt
+++ b/js-assembler/package.rkt
@@ -499,6 +499,8 @@ EOF
 <html ~a>
   <head>
     <meta name="viewport" content="initial-scale=1.0, width=device-width, height=device-height, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" />
+    <meta name="apple-mobile-web-app-capable" content="yes" />
+    <meta name="apple-mobile-web-app-status-bar-style" content="black" />
     <meta charset="utf-8"/>
     <title>~a</title>
 ~a
diff --git a/whalesong-helpers.rkt b/whalesong-helpers.rkt
index 0673d4d..dd00de6 100644
--- a/whalesong-helpers.rkt
+++ b/whalesong-helpers.rkt
@@ -120,7 +120,7 @@
          (build-path
           (regexp-replace #rx"[.](rkt|ss)$"
                           (path->string (file-name-from-path f))
-                          ".manifest"))])
+                          ".appcache"))])
       (unless (directory-exists? (current-output-dir))
         (fprintf (current-report-port) "Creating destination directory ~s\n" (current-output-dir))
         (make-directory* (current-output-dir)))
