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DiariumMini Diarium
Freemium

Free to start; Diarium Pro is a one-time purchase per platform.

 Free

Free and open source under the MIT licence.

Windows, macOS, Android, iOS Windows, macOS, Linux
  • No account needed to start
  • Sync through your own OneDrive, Google Drive, Dropbox, iCloud or WebDAV
  • AES-256-GCM encryption of every entry
  • No network access or telemetry
  • Pro must be bought separately on each platform
  • Closed source
  • No sync between devices
  • Name change announced, so the branding will shift
Downloadable app Downloadable app
Closed source Open source
License not stated License: MIT
No account needed No account needed
Not stated if it works offline Works offline

Checked September 24, 2026

Checked October 1, 2026

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