Comparison
PolySim OS vs Desmos
Desmos is the best free graphing calculator on the web. But it graphs functions; it doesn't simulate dynamical systems, fluids, circuits, orbits, or PDEs. PolySim covers the graphing basics and adds 390+ time-stepping, physics-grade simulations.
PolySim OS
From $0 (free local) · $24/mo Independent Researcher
Desmos
Free.
See PolySim in action
Live, interactive simulators that run free in your browser — no install, no license.
Feature comparison
| Feature | PolySim OS | Desmos |
|---|---|---|
| Function graphing | Yes | Best-in-class |
| Time-stepping simulation | Yes (390+) | No |
| Physics / ODE / PDE solvers | Yes | No |
| Code export | Python/MATLAB/Julia | No |
Where Desmos is strong
- • Gorgeous, instant graphing
- • Beloved in classrooms
- • Free
Where PolySim wins
- • No dynamical simulation
- • No physical solvers
- • Graphing only
Use Desmos to graph a function; use PolySim to simulate a system that evolves in time.
Switching from Desmos?
FEA / Structural Pro Pack — $39
Structural, thermal, and modal finite-element analysis toolset.
Popular products
Rush Compute
$8Run a job at 2× priority for faster turnaround.
Simulation Cost Estimate Report
$2Estimate the compute tokens and time a run will take.
Hobbyist
$9/moFor makers and enthusiasts exploring simulation.
Annual Reproducibility Audit
$49/yrAn annual audit certifying your key projects are reproducible.
Single Private Project Slot
$2Add one extra private cloud project beyond your plan limit.
Convergence Auto-Tuner
$8Automatically tune solver settings until your run converges.