From GGB reddit forum: [url=https://www.reddit.com/r/geogebra/comments/1jd5u3m/apple_store%E4%B8%AD%E7%9A%84%E4%BB%8B%E7%BB%8D%E8%A7%86%E9%A2%91%E6%98%AF%E5%90%A6%E5%9F%BA%E4%BA%8Egeogebra%E6%96%87%E4%BB%B6%E5%88%B6%E4%BD%9C%E8%80%8C%E6%88%90/]Apple GGB 3D app animation[/url]