Sigh, I misinterpreted this line:
This is the only development tool that allows you to develop 100% native iOS apps without a local Mac computer.
I mean, a phone is a computer.
I was also mislead by this line:
"All of the development steps can be done with the builder service including the final step which is uploading the application to Apple App Store."
To me, one of the development steps is testing so I read this to mean that the hosted builder included some kind of emulator.
So, the hosted builder installs the app on my local ios device similar to B4A?