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FreeOTP vs Authenticator: catalog facts
FreeOTP	Authenticator
Free Free and open source.	Free Free and open source under the GPL 3.0 or later.
Android, iOS	Linux
Open source with public repositories for both apps Available on F-Droid as well as Google Play and the App Store	Supports both TOTP and HOTP codes Fits in with the GNOME desktop
Mobile only, no desktop app Minimal project website with little documentation	Built for Linux desktops only Codes live on the desktop rather than on a phone you carry
Downloadable app	Downloadable app
Open 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 September 24, 2026

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