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Plus42 vs AlexCalc: catalog facts
Plus42	AlexCalc
Free Desktop builds are free and open source under GPL-2.0; mobile store pricing is not stated.	Free Free to use; the source is published under the AGPL-3.0.
Windows, macOS, Linux, Android, iOS	Android, iOS, Web
Faithful HP-42S behaviour with modern additions Plotting, units and TVM built in	Formatted LaTeX display makes long equations easy to verify Handles units, variables and complex numbers
RPN workflow takes time to learn Aimed at HP calculator users rather than casual use	The on-screen layout is dense for a first-time user Formal releases are not published on GitHub
Downloadable app	Downloadable app, Web application
Open source	Open source
License: GPL-2.0	License: AGPL-3.0-only
No account needed	No account needed
Works offline	Not stated if it 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.