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Lumo vs Private LLM: catalog facts
Lumo	Private LLM
Freemium Plans are not listed in the research; check Proton's site for current pricing.	Paid One-time purchase with no subscription, shared across your Apple devices and Family…
Android, Web	macOS, iOS
Zero-access encrypted chat history Provider states it does not track or record conversations	Works fully offline after model download No account, tracking or logs
Little public detail on models and limits in the research Requires trusting Proton's privacy claims	Apple devices only Closed source
Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 23, 2026

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