On device
Multi-account. OAuth. Private iCloud. No Exergy server. Tokens stay in the Keychain; meters sync.
Remaining useful work
Exergy
Claude, Codex, Cursor, Grok, Copilot, Gemini, OpenRouter — remaining quota on the Mac menu bar, iPhone, iPad, and Apple Watch.
The fill is leftover work, never spent percent. Empty rings stay empty. We do not invent zero.
left
Honest meters
Demo meters work without signing in. Unknown quota is an em dash, not a fake 0%.
Family
Thermodynamic sibling of Shannon: Shannon watches entropy collapse. Exergy watches how much work you have left to spend.
Free
In preparation for the App Store, same team as NATURaL. Compact phone, regular iPad, Watch glance, Mac HUD.