I haven't tried to reverse it but it's definitely not plain RFB, performance is too good even on an iPad 3 (about the lowest CPU-to-pixels ratio of any iPad eve

I haven't tried to reverse it but it's definitely not plain RFB, performance is too good even on an iPad 3 (about the lowest CPU-to-pixels ratio of any iPad ever made). The latency is noticeable enough to be annoying for primary use but it's great for documentation, chat window, etc.