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ArityCalc vs 3D Geometry Animation: catalog facts
ArityCalc	3D Geometry Animation
Free Free and open source under the Apache 2.0 licence.	Free Free and open source, distributed through F-Droid under the MIT licence.
Android	Android
Complex number support 2D graphing of multiple functions and their derivatives	Cartesian, polar, spherical and parametric surface definitions Time variable for animating formulas
Developer says it will stop working on certified Android devices once Google's verification rule applies Android only	Android only Small project with no tagged releases on GitHub
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
Not stated if an account is 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.