
SimPhy
Algodoo
Motion Magic Physics Simulator
PhET Interactive Simulations
Akinator
Minecraft
Crayon Physics Deluxe
Browser-based 2D physics sandbox for teaching and tinkering

NovoPsych
Clinical assessment tools for psychologists, therapists and occupational therapists. Send measures by secure link and review scored results, severity bands and reports.

Which is more popular?
Based on our record, Physion seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | physion.net | clientforms.app |
| Pricing | — | |
| Platforms | — | |
| Company | 2022 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Physion is a free browser-based 2D physics simulator. Draw rigid bodies (circles, rectangles, capsules, polygons, gears, text and polylines), connect them with joints and springs, then simulate liquids, soft bodies and particle emitters. Boolean shape operations and a scriptable laser raycast are...
Clinical assessment tools for psychologists, therapists and occupational therapists. Send measures such as the PHQ-9, GAD-7 and DASS-21 by secure link and get scored results, severity bands and reports ready to review. The catalogue also includes DSM-5 ADHD assessments and autism screening tools....
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


No analysis of Physion yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Liquids and Soft Bodies Simulation
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Physion and ClientForms.app.
ClientForms.app's answer:
Frontend: Next.js 15 (React 19), Tailwind CSS Backend: Supabase (PostgreSQL, Row-Level Security) Authentication: Clerk Payments: Stripe Hosting: Vercel (Sydney region) Database hosting: Supabase (Australian data residency)
ClientForms.app's answer:
Psychologists who assess ADHD and autism. Typically private practice, solo or small group (1-5 clinicians), currently using paper forms and spending hours on admin per assessment. They want something that works and is secure.
ClientForms.app's answer:
Neurodivergent-first design. Most digital forms just replicate paper online. ClientForms is built specifically for ADHD and autism patients - progress bars with time remaining (helps with time blindness), softer colours instead of harsh white, sticky headers so you always know where you are. The forms are designed to reduce anxiety and improve completion rates.
ClientForms.app's answer:
Most clinical software treats patients as an afterthought. ClientForms is designed specifically for neurodivergent users who are filling out the forms, progress indicators, time estimates, calmer colours, predictable layouts. One link, no signup required, works on any device. Patients just open and complete.
Share your experience with using Physion and ClientForms.app. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


'time scrolling by' with alias of clock time displayed everytime 'enter'/'return' pressed[0a][0b] would seem a bit easier to do than pop-up physics demo with 'clock displaying time flying through demo virtual space[1]. Although the later... - Source: Hacker News / over 2 years ago
Please give it a try at https://physion.net. Source: over 4 years ago
Tracking ClientForms.app since Dec 2025.
When comparing Physion and ClientForms.app, you can also consider the following products.

Interactive 2D & 3D Physics simulation software
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NovoPsych is a tool that is used for outcome monitoring via conducting psychological tests online.
Compare NovoPsych to Physion or ClientForms.app:

Algodoo is a 2D simulator freeware product designed as a physics learning tool. It was originally created by Emil Emerfeldt as part of his master’s thesis in 2008. Read more about Algodoo.
Compare Algodoo to Physion or ClientForms.app:

Motion Magic is a physics simulator built to help students visualize and solve classical mechanics problems through interactive simulations and analysis.
Compare Motion Magic Physics Simulator to Physion or ClientForms.app:

Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations.
Compare PhET Interactive Simulations to Physion or ClientForms.app:
Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.
Compare Akinator to Physion or ClientForms.app: