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Chalk vs Qalculate!: catalog facts
Chalk	Qalculate!
Free Free calculator software; the developer provides downloads.	Free Free and open source under the GPL.
macOS	Windows, macOS, Linux
Designed for both everyday and scientific calculations Documentation and examples are available	Unit calculations, unit conversion and live currency conversion built in Symbolic calculation including integrals and equations, with arbitrary precision
Available for macOS	Currency rates need an internet connection to update The sheer number of functions and settings is daunting at first
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 21, 2026

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