My Apps

Fun tools & toys I've built

Whiskerstein von Schrödinger

$15 One-time purchase

An AI cat that lives on your Mac! He runs around your screen, helps you with tasks, and is powered by Claude 4 and clever Hammerspoon magic. You use hotkeys to summon/unsummon him and for triggering his abilities. Uses your own Anthropic API key–pay only for what you use, no monthly subscription fees (you will be guided in setting it up). Think of him as your digital mentor and friend.

You'll be guided through every step of the setup—from Hammerspoon installation to API configuration. No technical expertise required. Think of it as assembly instructions, but for summoning an intelligent cat.

See Whiskerstein in Action:

What he can do:

  • Chat
  • Run around your desktop & chase your mouse
  • Help you write (autocomplete)
Get Whiskerstein - $15

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