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Pi vs Replika: catalog facts
Pi	Replika
Free Sign-up is free; the research does not mention paid plans.	Freemium Free to start; the homepage does not list prices for extra features.
Web	Android, iOS
Conversational tone suited to talking things through Runs in the browser with nothing to install	Long-term memory of people, routines and plans you share Conversational focus on companionship and reflection
Can make factual mistakes Aimed at conversation more than research or coding work	Personal conversations are stored by the service Not designed for research or productivity tasks
Web application	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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