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FreeOTP vs Stratum Auth: catalog facts
FreeOTP	Stratum Auth
Free Free and open source.	Free Free and open source under GPL-3.0.
Android, iOS	Android
Open source with public repositories for both apps Available on F-Droid as well as Google Play and the App Store	Generates HOTP and TOTP codes Supports Android and Wear OS
Mobile only, no desktop app Minimal project website with little documentation	Android and Wear OS only
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
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 8, 2026

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