ALTERNATIVE — JMAG
NO LICENSE
NO INSTALL
BROWSER-NATIVE
The free JMAG alternative.
JMAG-Designer is a powerful electromagnetic FEA package — and overkill for early-stage wireless power coil exploration. AirInduct Sim covers the inductive WPT regime that drives most JMAG coil-design projects, runs in your browser, and starts at $0.
01. · Why teams switch from JMAG
- No quote-only enterprise license — free tier runs the full solver.
- No 30-minute meshing setup before the first coupling result.
- Eight WPT-specific topology presets (Helmholtz, DTC, square, cross) instead of building from a blank canvas.
- Runs on a Chromebook, an iPad, a phone — anywhere a browser runs.
- Public REST API and MCP server for AI agents — no scripting license required.
02. · Where JMAG still wins
Nonlinear iron-core motors, eddy-current loss in laminated steel, transient electromagnetics with motion, and full-system EMC. AirInduct gets you to a candidate coil design fast; JMAG is where the production-validation lap belongs.
03. · Migration path
Build and sweep your coil in AirInduct, export geometry and parameter sets, then drop them into JMAG-Designer for the final loss/thermal certification pass. The two are complementary, not redundant.
See the full comparison matrix or try the Helmholtz simulator.