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GeoGebra vs KAlgebra: catalog facts
GeoGebra	KAlgebra
Best for: Students and teachers exploring graphs, geometry and algebra interactively	Best for: Students who want a desktop graphing calculator on Linux
Free The math tools are free to use.	Free Free and open source under the GPL-2.0-or-later licence.
Android, iOS, Web	Linux
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	2D and 3D function plotting Symbolic and analysis features beyond basic arithmetic All 3 strengths for KAlgebra 2D and 3D function plotting Symbolic and analysis features beyond basic arithmetic Regular releases with KDE Gear
Many separate apps and features can be confusing at first Not open source	Linux only in the published downloads Expression syntax takes some learning
Downloadable app, Web application	Downloadable app
Not open source	Open source
License not stated	License: GPL-2.0-or-later
No account needed	No account needed
Not stated if it works offline	Offline features available
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 KAlgebra apps.kde.org/kalgebra Catalog checked October 1, 2026

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