Powerful, but...

It crashes a lot on my ipod touch 4G. Seems to be not well optimized for such weaker devices. Do not buy if you dont own an ipad 4G :) Slightly overpriced... Autowire feature is annoying sometimes (places wire around the whole circuit). Lacking "flip selection" feature. Hard to enter lasso selection mode. But still the best circuit simulation app for iOS.

rolnik1992 about iCircuit, v1.4.7