EveryCircuit

All joking aside, this time you will understand how electronic circuits work. "I stumbled upon some serious gold" - GeekBeat.tv
"This app takes design to a whole new level of interactivity" - Design News

Build any circuit, tap play button, and watch dynamic voltage, current, and charge animations. This gives you insight into circuit operation like no equation does. While simulation is running, adjust circuit parameters with analog knob, and the circuit responds to your actions in real time. You can even generate an arbitrary input signal with your finger!

That's interactivity and innovation you can't find in best circuit simulation tools for PC.

EveryCircuit is not just an eye candy. Under the hood it packs custom-built simulation engine optimized for interactive mobile use, serious numerical methods, and realistic device models. In short, Ohm's law, Kirchhoff's current and voltage laws, nonlinear semiconductor device equations, and all the good stuff is there.

Growing library of components gives you freedom to design any analog or digital circuit from a simple voltage divider to transistor-level masterpiece.

Schematic editor features automatic wire routing, and minimalistic user interface. No nonsense, less tapping, more productivity.

Simplicity, innovation, and power, combined with mobility, make EveryCircuit a must-have companion for high school science and physics students, electrical engineering college students, breadboard and printed circuit board (PCB) enthusiasts, and ham radio hobbyists.

EveryCircuit is free to download and use. There is an option to purchase the full version of EveryCircuit that allows you to build and simulate large circuits, save unlimited number of circuits, store them on cloud, and sync between your devices. It is available via a one time in-app purchase for $14.99. The app requires a permission to access your account for authentication in EveryCircuit community.

Analyses:
+ DC analysis
+ AC analysis with frequency sweep
+ Transient analysis

Features:
+ Growing public library of community circuits
+ Animations of voltage waveforms and current flows
+ Animations of capacitor charges
+ Analog control knob adjusts circuit parameters
+ Automatic wire routing
+ Oscilloscope
+ Seamless DC and transient simulation
+ Single play/pause button controls simulation
+ Saving and loading of circuit schematic
+ Mobile simulation engine built from ground-up
+ Shake the phone to kick-start oscillators
+ Intuitive user interface
+ No Ads

Components:
+ Sources, signal generators
+ Controlled sources, VCVS, VCCS, CCVS, CCCS
+ Resistors, capacitors, inductors, transformers
+ Voltmeter, amperemeter, ohmmeter
+ DC motor
+ Potentiometer, lamp
+ Switches, SPST, SPDT
+ Push buttons, NO, NC
+ Diodes, Zener diodes, light emitting diodes (LED), RGB LED
+ MOS transistors (MOSFET)
+ Bipolar junction transistors (BJT)
+ Ideal operational amplifier (opamp)
+ Digital logic gates, AND, OR, NOT, NAND, NOR, XOR, XNOR
+ D flip-flop, T flip-flop, JK flip-flop
+ SR NOR latch, SR NAND latch
+ Relay
+ 555 timer
+ Counter
+ 7-segment display and decoder
+ Analog-to-digital converter
+ Digital-to-analog converter