Mozilla Will Not Release an iOS Version of Firefox Due to Apple's Limitations on Third-Party Browsers

firefoxCNET reports that during a talk at SXSW, Jay Sullivan, Mozilla's vice president of product, said that the company has no plans to release an iOS version of Firefox because of technological limitations imposed by Apple.
The nonprofit Mozilla, which pulled Mozilla Firefox Home from Apple's App Store in September 2012, is not currently building a version of its Firefox browser for iOS, nor does the company plan to, said Sullivan, speaking on a mobile browser wars panel at South by Southwest Interactive moderated by CNET Senior Reporter Seth Rosenblatt.

The sticking point for Mozilla is not being able to carry over its sophisticated rendering and javascript engines to iOS. Essentially, the organization doesn't feel like it can build the browser it wants to for Apple's platform, Sullivan told CNET.
Mozilla's stance on a Firefox browser for the iPhone is not new. In 2010, the company announced that it did not plan to create a standalone browser for the iPhone, citing the same technical and logistical restrictions that would prevent the company from creating an acceptable mobile experience via iOS.

Apple's Safari uses the speedy Nitro JavaScript engine exclusively, while restricting third-party browsers to UIWebView, which gives Safari a significant performance boost over other browsers.

Mozilla did create an iOS application called Firefox Home, which allowed Firefox users to sync Firefox history and bookmarks with a Webkit-powered web viewer.

The company also experimented with a stripped down version of Firefox called "Junior," which was designed to simplify the iOS browsing experience. That project has yet to see a public release, and Mozilla ended up removing Firefox Home from the App Store in September.

Other major players continue to compete with Safari, despite the imposed limitations. Opera has long had the Opera Mini browser in the App Store, and Google released a Chrome app for iOS last summer.