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Converter NOW vs Unitto: catalog facts
Converter NOW	Unitto
Free Free and open source under the GPL-3.0 licence.	Free Free with no ads or in-app purchases; open source under the GPL-3.0.
Windows, Linux, Android, Web	Android
Covers both physical units and currencies Same app on Linux, Windows, Android and the web	Calculator, unit, currency, date and time zone tools in one app No ads, in-app purchases or analytics
No dedicated homepage beyond the GitHub repository Scope is limited to conversions	Android only Currency conversion needs an internet connection for rates
Downloadable app, Web application	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
Not stated if an account is needed	No account 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 2, 2026

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