Compare software

fend vs Genius: catalog facts
fend	Genius
Free Free and open source.	Free Free and open source under the GPL-3.0 licence.
Command line	Linux
Arbitrary-precision arithmetic Built-in unit handling and conversion	Arbitrary precision integers and rational numbers Broad coverage of linear algebra, number theory and statistics
Command-line interface only, with no graphical calculator	Symbolic calculation is very limited Linux only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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