I've been using Swift Playgrounds on my iPad Air since the second iOS10 beta. It's been really stable, plays well with my bluetooth keyboard and the error feed

I've been using Swift Playgrounds on my iPad Air since the second iOS10 beta. It's been really stable, plays well with my bluetooth keyboard and the error feedback on it is excellent. My wish list for the next version would include (a) the ability to create and edit files in *.playground/Sources and (b) a project navigator view to let me move assets around the folders inside a Playground or Playground Book on the device. That said, it's a great tool for education as well as prototyping.