Circuit Wizard is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best Mac alternative is KiCad, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Circuit Wizard and 15 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Circuit Wizard are Fritzing (Paid, Open Source), Circuit JS (Free, Open Source), QUCS (Free, Open Source) and LibrePCB (Free, Open Source).
The Quite Universal Circuit Simulator (QUCS) is an integrated circuit simulator allowing the simulation and graphical presentation of results of large-signal, small-signal and noise behavior in circuits.
This electronic circuit simulator is highly interactive giving the feeling of playing with real components. It's very helpful for experimentation and visualization. It's a desktop version of the Circuit JS.
The gEDA project has produced and continues working on a full GPL'd suite and toolkit of Electronic Design Automation tools. These tools are used for electrical circuit design, schematic capture, simulation, prototyping, and production.