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PCalc vs Converter NOW: catalog facts
PCalc	Converter NOW
Paid Paid app, sold separately for Mac and for iOS devices.	Free Free and open source under the GPL-3.0 licence.
macOS, iOS	Windows, Linux, Android, Web
RPN mode alongside standard entry with parentheses Hexadecimal, octal and binary calculations	Covers both physical units and currencies Same app on Linux, Windows, Android and the web
Apple platforms only Paid, with Mac and iOS versions bought separately	No dedicated homepage beyond the GitHub repository Scope is limited to conversions
Downloadable app	Downloadable app, Web application
Closed source	Open source
License not stated	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 September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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