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Calcifer

A desktop fire demon powered by Claude. Lives in the corner of your screen and judges your code.

IN BUILDPricing TBDQ3 2026
Join the waitlist
WHAT IT IS

Calcifer is the macOS desktop companion I always wanted but never built. Press Cmd+Shift+Space anywhere on your machine and a small floating flame appears at the corner of your screen. Talk to it. It talks back, in character. It's powered by Claude under the hood, but it doesn't feel like ChatGPT. It feels like the fire demon from Howl's Moving Castle moved into your dock.

Seven flame states reflect mood — calm, working, thinking, surprised, annoyed, sleepy, mad. The whole thing is transparent, always-on-top, and disappears when you don't need it. Free tier: chat and basic agent tools. Pro: persistent memory, custom personality, voice mode.

WHAT'S IN IT
  • Cmd+Shift+Space hotkey from anywhere on macOS
  • Seven animated flame states
  • Powered by the Claude CLI subprocess — no API key juggling
  • Always-on-top, transparent, click-through when idle
  • Pro tier: memory + voice + custom personality
WAITLIST

Be the first to know when Calcifer drops.

Leave your email and I'll let you know the day it's ready. No newsletter, no CRM sequence — just one message when the wait is over.

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