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Calculator M3 vs OpenCalc: catalog facts
Calculator M3	OpenCalc
Free Free and open source under the GPL 3.0, with no ads.	Free Free and open source under the GPL-3.0 licence.
Android	Android
No data collection or network use for calculations Scientific functions and calculation history	Small download with no unnecessary permissions Scientific mode and calculation history
Android only On-device AI models need extra storage and a capable phone	Android only No releases published on the GitHub repository
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: GPL-3.0
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.