due to Apple's platform rules, every browser that runs on iOS is WebKit-based, so there are few opportunities for competitive differentiation outside of interface elements.
"Even in the EU and Japan, where Apple is now required to allow browser vendors to use their own engines, the barriers it has put in place ensure browser vendors are prevented from porting their own engines to iOS. Given that Apple has now had more than two years to produce a compliant solution, the European Commission needs to open a specification proceeding to instruct Apple, in precise terms, how these barriers must be removed."

