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

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