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Day One vs Penzu: catalog facts
Day One	Penzu
Freemium Free to use, with extra features in the paid Gold plan.	Free Free to start, with unlimited entries at no cost.
Windows, macOS, Android, iOS, Web, Browser extension	Android, iOS, Web
Entries can include photos, video, audio and drawings End-to-end encrypted sync and data export	Unlimited entries on the free plan Encryption and per-entry or per-journal locking
Some features require the paid Gold plan Closed source	Journals are stored on Penzu's service rather than in files you own Built for journaling, not general note-taking
Downloadable app, Web application, Browser extension	Downloadable app, Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account 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.