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Free, no-signup calculators for the money side of building software and freelancing

Motion Magic Physics Simulator
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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.

Which is more popular?
Based on our record, PhET Interactive Simulations seems to be more popular. It has been mentioned 27 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | devfinancetools.com | phet.colorado.edu |
| Pricing | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
No description of PhET Interactive Simulations yet.
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
No DevFinanceTools videos yet. You could help us improve this page by suggesting one.
Dr. Michael Dubson: PhET Interactive Simulations
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using DevFinanceTools and PhET Interactive Simulations. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking DevFinanceTools since Aug 2026.
Use the simulations from here: https://phet.colorado.edu/ to make correlations of Physics with real life concepts. After you run through each simulation, make notes on your ipad/laptop/or on a piece of paper with a diagram and... Source: about 3 years ago
Google Classroom. Phet https://phet.colorado.edu Creating lesson plans or handouts to go with simulations. Tinkercad for 3D modeling. Source: about 3 years ago
I’m no chem teacher but I have used phet in junior science. Might be worth a shout. Source: over 3 years ago
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Helping you make rational decisions, one calculation at a time.
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Motion Magic is a physics simulator built to help students visualize and solve classical mechanics problems through interactive simulations and analysis.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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Polish a rough diamond in your browser and learn the 4Cs by playing.
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Should you build an internal tool? Or just buy it?
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Interactive STEM learning platform with hands-on simulations. Explore Physics, Chemistry, Math & Biology through 3D visualizations and real-time parameter manipulation — not passive video watching.
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