Very nice real time simulator – iCircuit Review

You design your circuit, then hook up a power supply, and you have instant real time simulation. Just double tap on a wire or component, and a menu pops up giving you the option to plot (voltage or current or both) at that wire/component location, keeping it visible all the time, until you undo the option. This is good as a current or volt meter permanently set at those locations. If you single tap on a wire or component it will highlight, and show both current and voltage at that location, but it will disappear when you tap to unhighlight it. This feature gives you the option to do quick checks on current and voltage values, at locations without cluttering the schematic. Now every time you make a change to the circuit, immediately the values of current and voltages update , shown at all locations. This is handy with variable resistors as you can guage current and voltage changes as you adjust the variable resistance. The entire circuit updates in real time.
Review by jilfe on iCircuit.