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RPN vs Dib2Calc: catalog facts
RPN	Dib2Calc
Free Free and open source under GPL-3.0-or-later.	Free Free and open source under GPL-3.0-or-later.
Android	Android
Stack-based Reverse Polish Notation Fixed-point decimal arithmetic	Uses stack-based RPN input Includes functions for text and data structures
Does not include scientific functions, unit or base conversions, programmability, or memory registers	Uses RPN notation, which differs from standard calculator entry Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-or-later
Not stated if an account is 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 8, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.