See when your Mac drains battery while charging
Single-file Swift app using IOKit, but coconutBattery already monitors this.
Your essential tool for keeping track of all your Bluetooth-connected devices' battery levels, conveniently located in the macOS menu bar. ( Currently, it only works on the first party apple products like Magic Mouse )
Menu bar battery monitor is useful, but macOS already shows this natively now.
macOS users with multiple Bluetooth peripherals
Battery Indicator · MacOS Control Center · iStat Menus
Single-file Swift app using IOKit, but coconutBattery already monitors this.
Your Mac yaps with dramatic opera when battery hits 5% — fun novelty with real system hooks.
Turns Claude usage numbers into an immediately understandable battery UI — two menu-bar icons (session and weekly), red alerts under 20%, per-model breakdown, and a weekly reset countdown in a compact popover. The multi-account support (up to 5) and nickname editing are thoughtful touches for people juggling personal and work accounts. It isn't revolutionary, but the battery metaphor and tiny friction to install (DMG + menu-bar UX) make this the kind of tool non-technical teammates will actually use.
Per-app power attribution on Apple Silicon when Activity Monitor fails you.
Menu bar wrapper for terminal statusline data — only updates when Claude Code runs.
Native Swift menu bar timers with App Sandbox privacy and negligible battery footprint.