Altair Flux (and FluxMotor) is a low-frequency electromagnetic FEA package — and overkill for early-stage inductive WPT coil exploration. AirInduct Sim covers the magnetostatic WPT regime that drives most Flux coil-design projects, runs in your browser, and starts at $0.
Nonlinear iron-core motors, induction heating, transformers and detailed laminated-steel eddy-current loss. AirInduct will get you to a candidate WPT coil in seconds; Flux is where the loss / thermal certification lap belongs.
Build and sweep your coil in AirInduct, export geometry and parameter sets, then drop them into Altair Flux for the final loss / thermal pass.
See the full comparison matrix or try the Helmholtz simulator.