iWebBoost is a tweak released during this evening in Cydia, and with its help we can significantly improve the loading speed of web pages using third-party browsers or applications such as Google Chromeor Facebook, which use webviews. Working in a similar way to the tweak Nitrous, iWebBoost implement Nitro Javascript support for these third-party applications App Store, and each of them will work as fast and well as the operating system's Safari browser.
The answer is simple: Apple denies them access to one game changing technology – Just In Time Compiling. Only Apple's Safari is allowed to make use of it. But without JIT-Compiling JavaScript is much slower. All the speed gains of Chrome are consumed by this disadvantage. It is what makes the Facebook App so horribly slow. There is no reasonable advantage for the user not to use it. Apple just wants this advantage for their Apps.
iWebBoost is available in the repo BigBoss al Cydia and it will only affect applications that allow internet browsing.
