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Lotti vs Day One: catalog facts
Lotti	Day One
Free Free and open source under the GPL-3.0.	Freemium Free to use, with extra features in the paid Gold plan.
macOS, Linux, Android, iOS	Windows, macOS, Android, iOS, Web, Browser extension
End-to-end encrypted sync between your own devices AI suggestions require your approval	Entries can include photos, video, audio and drawings End-to-end encrypted sync and data export
AI agent workflow may be more than a simple journal user needs Cloud AI features depend on external model providers	Some features require the paid Gold plan Closed source
Downloadable app	Downloadable app, Web application, Browser extension
Open source	Closed source
License: GPL-3.0-only	License not stated
Not stated if an account is 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 October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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