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Converter NOW vs Soulver: catalog facts
Converter NOW	Soulver
Free Free and open source under the GPL-3.0 licence.	Paid $59 one-time purchase after a 60-day free trial, also included in Setapp.
Windows, Linux, Android, Web	macOS, iOS
Covers both physical units and currencies Same app on Linux, Windows, Android and the web	Natural-language calculations with dates, currencies and units Variables and line references keep scenarios editable
No dedicated homepage beyond the GitHub repository Scope is limited to conversions	Apple platforms only One-time price is high for a calculator
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 October 1, 2026

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