Good, but sorely needs an update – iCircuit Review

iCircuit is an easy-to-use virtual breadboarder that handles both digital and analog circuits. The simulator is smooth and rapid. The editor lets you build rapidly, but lacks some basic functionality such as rotating components or color-coding wires, so circuits rapidly become unwieldy. When launching iCircuit for the first time, be sure to disable iCloud sync'ing, or else the app will quit on launch and you'll need to remove and reinstall it.
Review by brazenraisin on iCircuit.