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Calculator vs Uno Calculator: catalog facts
Calculator	Uno Calculator
Free Free and open source under the GPL-3.0 licence.	Free Free to use; the underlying calculator code is under the Apache-2.0 licence.
Linux	macOS, Linux, Android, iOS, Web
Native look on the COSMIC desktop History of earlier calculations you can reuse	Familiar Windows Calculator layout on other systems Scientific and Programmer modes
Basic calculator without advanced scientific features documented Designed mainly for COSMIC	Initial load can be slow Built mainly as a framework showcase
Downloadable app	Downloadable app, Web application
Open source	Open source
License: GPL-3.0-only	License: Apache-2.0
No account needed	No account needed
Works offline	Not stated if it 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.