Physion

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Physion is ranked #45 of 91 in physics simulation software on Inferse. It runs on Web. There is a free plan. Paid plans start at $6/mo.

Compared on physics simulation software

Free plan: Yesphysion.net
Paid from: $6/mophysion.net
Delivery mode: webphysion.net
Authoring tools: Yesphysion.net
3D visuals: Nophysion.net
Offline access: Nophysion.net

Facts

What it does: Physion is a browser-based 2D physics simulator for designing and running interactive physics experiments.physion.net · 28 Sept 2026
Shape and mechanism tools: It supports shapes including circles, rectangles, capsules, polygons, text bodies, polylines, spirals and gears, plus joints, springs and ropes.physion.net · 28 Sept 2026
Liquid and particle simulation: Physion simulates liquids, soft bodies and particle emitters using particle simulation.physion.net · 28 Sept 2026
Boolean and laser tools: The simulator provides boolean operations for combining or cutting shapes and laser rays that reflect off surfaces.physion.net · 28 Sept 2026
JavaScript scripting: Users can attach standard JavaScript Node Scripts to objects, handle lifecycle and collision callbacks, access the physion global and import external JavaScript libraries.physion.net · 28 Sept 2026
Graphs and force diagrams: Physion includes live graphs for motion, force, momentum and energy properties and free-body diagrams showing gravity, normal, friction, joint-reaction and spring forces.physion.net · 28 Sept 2026
Browser and installation: Physion runs in a modern desktop browser with no download, installer, plugin or browser extension, and scenes can be shared by URL.physion.net · 28 Sept 2026
Mobile limitation: Phones and tablets can open, watch and interact with existing scenes, but drawing and editing tools are disabled there.physion.net · 28 Sept 2026
Offline limitation: Physion requires an internet connection, stores saved scenes on its servers and has no offline or downloadable local app mode.physion.net · 28 Sept 2026
Authentication and billing integrations: Accounts use Google or Facebook sign-in, while paid subscriptions are handled through Stripe inside the app.physion.net · 28 Sept 2026
Security and processing: Physics calculations run locally in the user's browser rather than on a server, and Physion says it never sees card details because Stripe handles billing.physion.net · 28 Sept 2026
Open-source status: The Physion app is not open source, although the physion-assets and physion-translations companion repositories are public and open to contributions.physion.net · 28 Sept 2026
Target users: The maker describes Physion for teachers, students and hobbyists building classroom demonstrations, experiments and mechanical creations.physion.net · 28 Sept 2026
Support: Users can ask questions or discuss school and classroom needs on Discord, and the Pro plan includes premium support.physion.net · 28 Sept 2026
Usage limits: Only account scene saves are metered; building, running and opening scenes are unlimited, with the monthly save count resetting at the start of each calendar month.physion.net · 28 Sept 2026