Something fishy is going on with how the new iOS 4.3 handles web apps, leading to some concern that Apple may be trying to encourage its user base to favor programs bought through the App Store. Web apps saved to the home screen, when launched full-screen directly from there instead of through Safari, are running at less than half-speed.
Now sure, it might look like Apple has set things up so that users get frustrated with slow web apps and stick to buying native iOS apps, but it’s likely a far less sinister story. After all, it’s mostly a case of web apps now running much better in-browser than they used to, making them just seem sluggish on the home screen by comparison. Look to Apple’s next update to see if, now that these problems are known, it takes the steps to correct the performance gap. If it’s in favor of a level playing field, expect Nitro to be implemented across-the-board.
Source: The Register