Circuit Calculator

Build an AC or DC electrical circuit by adding, dragging and rotating components and then snapping them together. The steady state response is calculated instantly at the tap of a button. DC current flows can be animated on screen.
Zoom and pan around with standard gestures to view the voltages and currents which are displayed on the schematic.
Circuit Calculator is an ideal companion for anyone studying electrical engineering and is great for quickly checking your answers when you've solved a circuit analysis problem by hand. Enter component parameters as real and imaginary or modulus and argument, just as you would be given in a typical homework problem. Please note that this app doesn't perform transient analysis.
Main Features:
・Create your circuit schematic on screen
・Solve and show the results on the schematic
・Calculate steady state currents, voltages and power
・Show animated dc current flows
・Calculate Thévenin/Norton equivalent circuit values
・Choose polar or rectangular notation for AC
・Share circuits via Messages or Mail apps
・Print out your circuit
・Copy circuit to clipboard
・Load / save circuits on your device or in iCloud
・Undo / redo actions
・Copy / paste components
・Built in user guide
Available Components:
・Independent ideal current sources
・Independent ideal voltage sources
・Current controlled current sources
・Current controlled voltage sources
・Voltage controlled current sources
・Voltage controlled voltage sources
・Resistors
・Capacitors
・Inductors
・Mutually coupled inductors - AC only
・Impedances - AC only
・Diodes - DC only
Check out http://circuitcalc.nwd-apps.co.uk or the Circuit Calculator YouTube channel for more information.