[ColinWright]

From the "meta" tag:

    <meta
      name="description"
      content="Loopy is a new fun way of communication
               with your near and dear ones. Express your
               feeling and emotions through drawing and
               privately send them to a friend. After
               they view it, the loopy will disappear
               forever."
      >

I assume it's Apple only, and probably iPhone only, and might be a specific iOS version only.

But who know?