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Kee vs Strongbox: catalog facts
Kee	Strongbox
Freemium Version 2 is free on Android and iOS; the developer also offers a subscription.	Freemium Available through the App Store, with paid features on top of the free app.
Android, iOS, Web, Browser extension	macOS, iOS, Browser extension
Browser auto-fill for KeePass-format password stores Argon2 vault protection and open source code	Uses standard KeePass files with no lock-in Sync through cloud storage, WebDAV or SFTP
Two app versions with different features can be confusing Licence for the source code is not stated on the homepage	Apple platforms only Many settings to understand for new users
Downloadable app, Web application, Browser extension	Downloadable app, Browser extension
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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