No, I'm trying to write software on iOS, as are many other people. My app is probably over 35k lines. I'd rather have it all in Swift because I believe it would have fewer bugs, be easier to maintain, and perhaps even require less code:

https://itunes.apple.com/us/app/h4-spanish-lite/id388918463?...

Personally, I'm trying to contribute to the Swift transition by aggregating the Swift tutorials on the Internet.

http://h4labs.com/dev/ios/swift.html

At some point, if Apple doesn't open source Swift, I'd gladly help in an open source compiler.