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Rink vs eva: catalog facts
Rink	eva
Free Free and open source, licensed under MPL-2.0 and GPL-3.0.	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Web, Command line	Windows, macOS, Linux, Command line
Tracks units through whole calculations Dimensional analysis catches mismatched quantities	Interactive REPL or one-off expressions from the command line Syntax highlighting and persistent history
Repository is in the middle of moving to Codeberg No prebuilt releases listed on GitHub	No packaged releases on GitHub A plain calculator, not a full programming language like bc
Downloadable app, Web application	Downloadable app
Open source	Open source
License: MPL-2.0 and GPL-3.0	License: MIT
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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