Early trusted testers — invite only

Give your AI assistant a memory that survives every conversation.

PrefStack is a personal memory-continuity layer: it holds your preferences, working context and long-term history, then hands them to whichever assistant you're using. Nothing to re-explain. Nothing lost when the chat closes.

• Continuity by default

  Every session starts where the last one ended — no re-explaining who you are.

• One portable identity

  Your preferences travel with you across assistants, tools and models.

• Structured, not scraped

  Memory as clean layers you can read, edit and revoke at any time.