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FreeOTP vs Stratum: catalog facts
FreeOTP	Stratum
Free Free and open source.	Free Free and open source under the GPL 3.0 license.
Android, iOS	Android
Open source with public repositories for both apps Available on F-Droid as well as Google Play and the App Store	Encrypted backups with import from other apps and export at any time Supports TOTP, HOTP and mOTP
Mobile only, no desktop app Minimal project website with little documentation	Android only, with no iOS or desktop version Only handles one-time codes, not passwords
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	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.