Compare software

SpeedCrunch vs Kalk: catalog facts
SpeedCrunch	Kalk
Free Free and open source under the GPL.	Free Free and open source under the GPL-3.0-or-later.
Windows, macOS, Linux	Linux
Results update as you type Up to 50 digits of precision	Adapts to desktop and phone screens Regular releases with KDE Gear
Latest advertised release is the long-standing 0.12 Keyboard-centred design may not suit button-only users	Linux only Few details on advanced features in the research
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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