EveryCircuit

All joking aside, this time you will understand how electronic circuits work. 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!

"This app takes design to a whole new level of interactivity" - Design News

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.

Join EveryCircuit cloud community to store your circuits on cloud and access them from any of your mobile devices. Explore public community circuits and share your own designs.

EveryCircuit is free to download and use. There is an option to purchase the Full Version of EveryCircuit that adds access to thousands of community circuits, large workspace area, cloud storage, and sync between your devices and is available through a one time in-app purchase for $14.99.

EveryCircuit privacy policy and terms of use:
http://www.everycircuit.com/privacypolicy.html
http://www.everycircuit.com/termsofuse.html

Thanks to Prof. N. Maghari for technical discussions, feedback, and help with designing circuit examples.

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

Features:
+ Thousands of public community circuits
+ Animations of voltage waveforms and current flows
+ Animations of capacitor charges
+ Analog control knob adjusts circuit parameters
+ Automatic wire routing
+ Oscilloscope with I-V curves and stack mode
+ 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
+ IEC and ANSI circuit component symbols
+ 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)
+ 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

Next:
+ More components

If you like it, please rate, review, and buy!