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AlexCalc vs ArityCalc: catalog facts
AlexCalc	ArityCalc
Free Free to use; the source is published under the AGPL-3.0.	Free Free and open source under the Apache 2.0 licence.
Android, iOS, Web	Android
Formatted LaTeX display makes long equations easy to verify Handles units, variables and complex numbers	Complex number support 2D graphing of multiple functions and their derivatives
The on-screen layout is dense for a first-time user Formal releases are not published on GitHub	Developer says it will stop working on certified Android devices once Google's verification rule applies Android only
Downloadable app, Web application	Downloadable app
Open source	Open source
License: AGPL-3.0-only	License: Apache-2.0
No account needed	Not stated if an account is needed
Not stated if it 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.