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jrnl vs Diarium: catalog facts
jrnl	Diarium
Free Free and open source.	Freemium Free to start; Diarium Pro is a one-time purchase per platform.
Command line	Windows, macOS, Android, iOS
Entries are plain text files you own Optional AES encryption of journals	No account needed to start Sync through your own OneDrive, Google Drive, Dropbox, iCloud or WebDAV
Terminal only, with no graphical interface Sync depends on a separate tool such as Dropbox	Pro must be bought separately on each platform Closed source
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
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 September 24, 2026

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