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0 pointschrisringrose13y ago0 comments

An email app like Mail just download and keep offline copies of most of the mail. Opening the app and it instantly shows the pre-downloaded stuff. Yes, so in that sense, the mail app is faster. Bravo.

The 40% faster boost takes us into the range of not-really-noticeable. If there were a dev tool to make efficient HTML5 apps just like there is to make native, and this speed difference was in miliseconds, not seconds, developers will flock to HTML5.

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pooriaazimi13y ago

I have to disagree. I didn't mean that Mail.app "shows stuff" faster because it's cached the data and there's no roundtrip to the server (BTW, Gmail.app does this too). I meant the animations, scrolling and general speed with which "things" happen after you touch something or swipe.

And as I said, even if HTML5 rendering gets 40% faster, it's still extremely slow compared to native UIKit stuff. HTML5 is like 3 times slower than UIKit if you have any animation (and by animation, I don't mean really fancy stuff even - even moving a rounded rectangle from point A to point B).

It's not this drastic on Android, but iOS's graphics stack has been heavily optimized so a lot of stuff happens in layers in GPU. UIWebView, because of its implementation, does (almost) all its renderings in CPU and almost by definition, is much, much slower than anything that's GPU-accelerated (and takes at least 50% more memory and power).

The difference is like night and day. Open Gmail.app in iPhone 4S or 5 (the new Gmail.app that was released a few weeks ago is faster than previous versions though), and open Mail.app in an iPhone 3G. You'll see the difference clearly.

chrisringroseOP13y ago

But I don't. I just loaded up gmail.com on the iPhone, and its nearly flawless. If I click the "show all folders" button, it seamlessly swings over. No lag, no jittery animation.

In fact, I use the built-in Mail app all the time. Loading gmail via IMAP in this Mail app is actually slower than the Gmail.com web app. For example, if I enter a subfolder I've created (labels), and haven't entered it in a long time, there's a considerable lag on the Mail app, and 1 second wait in the Gmail.com web app.

(iPhone 5 BTW)

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