i imagine set up would be difficult for people not accustomed to mucking around in network settings and this sort of thing. i found it fairly straight forward by following the instructions on the website.
with the iPad Logic Remote as an easy alternative, i imagine these developers of TouchOSC will have to up their game though.
given the price and the potential (i see this as having great potential, not unlike Logic Remote), this gets 4 stars. make switching to new preset layouts easier and provide more explicit videos for set up, and i will be forced to give this app 6 stars. ok, not possible, but you know what i am saying.
Magister418 about TouchOSC Mk1, v1.9.1