Did you hear about Phonegap, Titanium and all the write once, ship multiple times frameworks? They are here for some time. It's a hard to solve problem. Facebo

Did you hear about Phonegap, Titanium and all the write once, ship multiple times frameworks? They are here for some time. It's a hard to solve problem. Facebook was once doing a webapp for mobile and it had an average of 1 star in the app store. Now hopefully they learned their lesson and reiterating on an approach. Still it doesn't mean they'll get it. There's also game development with Metal, how are you supposed to use javascript for high quality rendering. Swift will be needed and at the very least as a host for your javascript app. And swift is a no brainer improvement over objective c. It's safer and modern.