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GeoGebra vs PhET Interactive Simulations: catalog facts
GeoGebra	PhET Interactive Simulations
Best for: Students and teachers exploring graphs, geometry and algebra interactively	Best for: Free interactive physics, chemistry and math simulations usable directly in the browser
Free The math tools are free to use.	Free Free interactive simulations.
Android, iOS, Web	Web
Graphing, geometry, 3D and scientific calculators in one family Dynamic geometry constructions you can drag and explore All 4 strengths for GeoGebra Graphing, geometry, 3D and scientific calculators in one family Dynamic geometry constructions you can drag and explore Large library of classroom resources Runs in the browser with no install	Simulations can be used immediately with no signup or installation Covers a broad range of physics, chemistry and math topics in one place
Many separate apps and features can be confusing at first Not open source	Aimed at simulation-based exploration rather than structured, graded coursework Browser-based delivery, with no offline access described
Downloadable app, Web application	Web application
Not open source	Not open source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for GeoGebra geogebra.org play.google.com/store/apps/details apps.apple.com/us/app/geogebra-calculator-suite/id1504416652 Catalog checked September 23, 2026	Official website Full listing and sources Sources for PhET Interactive Simulations phet.colorado.edu/en/simulations/filter Catalog checked September 22, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.