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Stoic vs Penzu: catalog facts
Stoic	Penzu
Free Described by the developer as free.	Free Free to start, with unlimited entries at no cost.
macOS, Android, iOS, Web	Android, iOS, Web
Ready-made prompts make short daily entries easy Mood tracking alongside journal entries	Unlimited entries on the free plan Encryption and per-entry or per-journal locking
Closed source AI features may not suit people who want a plain private diary	Journals are stored on Penzu's service rather than in files you own Built for journaling, not general note-taking
Downloadable app, Web application	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 October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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