Bill Cipher lives on your desktop.
A hand-drawn 380-sprite pixel-art companion — native Swift — who roams your screen, studies your apps, watches the sky, and chats back through his own speech bubbles.
What he does
Studies your apps
Bill offers to use his ChatGPT connection to write himself commentary for every app on your Mac — morning, midday, afternoon and night lines, plus transition quips.
Reads the sky
Keyless Open-Meteo nowcast, refreshed every five minutes. When it starts raining exactly outside, he tells you.
Roams everything
Walks the floor, climbs your windows, perches, falls with gravity.
Presses buttons
Occasionally leaps onto a background window's yellow minimize light and actually minimizes it.
Talks back
Right-click → Talk. Fixed-size pixel chat window, scrollable, dot-matrix header — nothing ever gets clipped.
Has moods
All 66+ animation families from idle, tiered by rarity. Poke him too much and find out.
Summon him
Platforms
Native and first-class. Download it right now.
Coming soon.
Coming soon.