Apple gave Safari a JavaScript boost in iOS 4.3 to make pages load faster, however in-app browsers or web apps seemed to have missed that ‘training session’. Ars Technica has confirmed that pages or web apps loaded using those methods aren’t getting the optimization that Safari gets in iOS 4.3, which is found to be 2.5 times faster than Safari in iOS 4.2. However, do remember that they’re still running the same speed as when they’re in iOS 4.2, so you shouldn’t be feeling a big difference compared to when you’re still on iOS 4.2, besides feeling that all of a sudden Safari seemed faster in page load. Not surprisingly, that has prompted some to speculate that it’s all part of a grand plan on Apple’s part to force developers to use full-fledged apps instead of mobile apps, but Ars Technica points out that it could just as easily be due to some technical problems.

SOURCE via Ars Technica