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KeePassium vs Strongbox: catalog facts
KeePassium	Strongbox
Freemium A commercial open-source app distributed through the App Store.	Freemium Available through the App Store, with paid features on top of the free app.
macOS, iOS	macOS, iOS, Browser extension
Reads and writes all KeePass formats, including kdbx4 Two-way sync with almost any Files app storage provider	Uses standard KeePass files with no lock-in Sync through cloud storage, WebDAV or SFTP
Apple platforms only Some features are tied to the commercial side of the app	Apple platforms only Many settings to understand for new users
Downloadable app	Downloadable app, Browser extension
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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