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Diarium vs Journalize: catalog facts
Diarium	Journalize
Freemium Free to start; Diarium Pro is a one-time purchase per platform.	Free Free and open source under the GPL-3.0 licence.
Windows, macOS, Android, iOS	Android
No account needed to start Sync through your own OneDrive, Google Drive, Dropbox, iCloud or WebDAV	Markdown rendering with images Tags and search across entries
Pro must be bought separately on each platform Closed source	Android only Small project with a single developer
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0-or-later
No account 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 24, 2026	Official website Full listing and sources Checked October 2, 2026

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