PPolySim OS
For First Responders · Spatial Predator–Prey

Spatial Predator–Prey for a vaccine rollout

Built for first responders planning or training for real incidents. Run fast what-if scenarios for response planning and training — no software to install in the field. Simulate a vaccine rollout live below — adjust the inputs and watch it respond, right in your browser.

Spatial Predator–PreyLive

Controls

Prey (green) spread; predators (red) hunt them and starve without food. Spatial structure creates traveling waves the classic equations can't show.

Presets

▶ Run in Python

Data Inspector

Prey0
Predators0
Grid140×140

Lotka–Volterra (mean field)

Reading this result: Predators have died out — with starvation at 0.02 they could not reach prey fast enough, so prey now fill the grid unchecked.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Frequently asked questions

Is this good for first responders?
Yes — this version of "Spatial Predator–Prey for a vaccine rollout" is framed for first responders planning or training for real incidents. Run fast what-if scenarios for response planning and training — no software to install in the field.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.