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AlexCalc vs Plus42: catalog facts
AlexCalc	Plus42
Free Free to use; the source is published under the AGPL-3.0.	Free Desktop builds are free and open source under GPL-2.0; mobile store pricing is not stated.
Android, iOS, Web	Windows, macOS, Linux, Android, iOS
Formatted LaTeX display makes long equations easy to verify Handles units, variables and complex numbers	Faithful HP-42S behaviour with modern additions Plotting, units and TVM built in
The on-screen layout is dense for a first-time user Formal releases are not published on GitHub	RPN workflow takes time to learn Aimed at HP calculator users rather than casual use
Downloadable app, Web application	Downloadable app
Open source	Open source
License: AGPL-3.0-only	License: GPL-2.0
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.