Compare software

Kalk vs KCalc: catalog facts
Kalk	KCalc
Free Free and open source under the GPL-3.0-or-later.	Free Free and open source under the GPL-2.0-or-later licence.
Linux	Linux
Adapts to desktop and phone screens Regular releases with KDE Gear	Scientific, statistics and numeral system modes Results stack for recalling previous answers
Linux only Few details on advanced features in the research	No graphing Best integrated with KDE Plasma
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-2.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.