Nomad sculpt has become my "go to" for rapid visual prototyping. It is easy to use, intuitive, inexpensive and WORKS ON MY IPAD.
I sculpted this guy entirely in Nomad sculpt- while sitting on my couch. :) He's is an original design- i worked freehand without any visual development- and had fun while i sculpted.
Warrior Sculpt- using Nomad Sculpt