LLMs are stateless — they forget you the moment you close the tab. Quiddy gives every question the full context it needs: who you are, what you're building, and how you think. Better context means better questions. Better questions mean vastly better answers.
macOS 13 Ventura or later · Apple Silicon & Intel · ~8 MB
counter variable is accessed from multiple goroutines without a mutex.Design AI behaviour across four dimensions — Sensitivity, Exploration, Expressiveness, and Knowledge. Each combination generates a tuned system prompt automatically.
Attach PDFs, specs, code files, and docs to your personas. The vault is injected as context on every message — the AI always knows your project.
Quiddy learns facts about you across conversations — automatically. Your preferences, projects, and context are remembered and reflected in every response.
Your conversations, memories, and vault documents never leave your Mac. The only external calls are to the LLM APIs you configure. Zero telemetry.
Claude 4, GPT-4o, Gemini 2.5, and more. Switch models per conversation. Use Floodgate internally or bring your own API keys.
Track every LLM call — input/output tokens, latency, estimated cost by model and persona. Full export to CSV for reporting.
SEEK is Quiddy's persona engine. Dial in exactly how the AI thinks, communicates, and approaches problems — then generate a complete system prompt in one click.
Emotional tone and affect
Reasoning and thinking style
Output style and format
Domain role and expertise
Conversations, memories, vault documents, and API keys are stored locally and never transmitted to Quiddy's servers. We can't read your chats — because we never receive them.
No Docker, no Node.js, no setup scripts. Quiddy is a single native Mac app.
Drag Quiddy to Applications. Launch. The built-in server starts automatically — no configuration needed.
The first-run wizard asks for your name and a quick description of your work. This seeds your first persona with real context.
Choose from Ari (Engineer), Vax (Writer), Tark (Strategist), Nack (Teacher), or Kana (Scientist). Each is pre-tuned and ready to use.
Use the conversation starter chips below the input, or type your own. Your persona's context, knowledge, and behaviour are all active from message one.
Download Quiddy for Mac. Free, private, and yours. No account needed to get started.