Everycircuit is described as 'Design and simulate electronic circuits!
All joking aside, this time you will understand how electronic circuits work.
"I stumbled upon some serious gold" - GeekBeat.tv
"A fully realized circuit simulator" - EDA360 Insider
Build any circuit, tap play button, a' and is a circuit simulator in the education & reference category. There are more than 10 alternatives to Everycircuit for a variety of platforms, including Windows, Mac, Android, Linux and Web-based apps. The best Everycircuit alternative is Circuit JS, which is both free and Open Source. Other great apps like Everycircuit are LTspice, iCircuit, CircuitJS1 Desktop Mod and VoltSim.
It's completely free, it has oscilloscope and many more...