I was playing with the new features in SynthPond 2.0 today, and I really like the orbit function that has arrived in version 2.0. It adds a new dimension to this app, but it really isn't for beginners in any way at all.
It is quite interesting to see how the different nodes interact with each other, but this app isn't for the occasional user. I think it requires time to get used to how different patterns can be generated and how to achieve more subtle interactions. I hope to spend some more time with this soon.
SynthPond at the iTunes App Store