One reason this was kind of urgent for us is:<p>1. The prevalance of low-end Android devices<p>2. The dominance of Android worldwide, e.g. <a href="http:&#x2F;&#x2F;www.idc.com&#x2F;prodserv&#x2F;smartphone-os-market-share.jsp" rel="nofollow">http:&#x2F;&#x2F;www.idc.com&#x2F;prodserv&#x2F;smartphone-os-market-share.jsp</a> shows 2015Q2, android 82.8%, iOS 13.9%, everything else ~3%<p>We&#x27;ve also been working with Google to see what they can do to make Android&#x2F;Chrome performance better with complex JavaScript like Ember and Angular. Chrome 45 improved things about 25% which is great, but when you start 500 to 800% slower, there&#x27;s a long way to go..<p>Complex JavaScript performance on iOS is, and remains, amazing and stellar. Problem is not much of the world is on iOS.