Apple Confirms Web App Slowdown in iOS 4.3 [Gizmodo]
If you've updated your iPhone or iPad to iOS 4.3 and noticed that some applications are loading web pages more slowly than the Safari browser since the upgrade, there's a reason. When Apple made changes to Safari's JavaScript engine for iOS 4.3 that sped up the loading of web pages, it didn't make those same changes to embedded web viewer that some iOS apps use.
As a result, web apps run 2 to 2 and a half times slower when they're running through any app besides the iOS Safari browser.
Apple released iOS 4.3 with the debut of the iPad 2.
While Apple has confirmed the issue it isn't commenting on whether there's a fix coming for those apps, users can get the advantage of the new JavaScript engine by using Safari to load pages rather than the embedded web viewer.
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