WattMate

Which app or coding agent is draining your Mac battery

64 followers

Which app or coding agent is draining your Mac battery

64 followers

See which apps and AI coding agents are draining your MacBook battery, right from the menu bar, in real watts and the minutes you get back by quitting one. Two minutes after you quit, WattMate measures again and shows what really changed. Claude Code, Codex CLI and Cursor Agent get their own row, with what each task cost the battery. It also names what woke your Mac overnight. Apple silicon, macOS 14+.

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Launch tags:Mac•Productivity•Menu Bar Apps

Launch Team / Built With

WattMate

Maker

📌

I'm the guy who forgets to charge overnight, walks into a coffee shop with a half-empty Mac and then sits there not knowing what is draining it or whether closing anything would help. Activity Monitor has an Energy Impact column, but it's a score with no unit: you can rank apps with it, you can't turn it into time. So I wrote an app whose main screen has one rule: only what's changing right now and what you can act on. That became 2 numbers per app, the watts it's drawing and the minutes you get back if you quit it. And because any tool can print a number, 2 minutes after you quit it measures the Mac again and prints what actually changed. The screenshot says "promised 24 min, got 28", and when the load moved for other reasons it says that instead. I also assumed sleep was free. Most nights my Mac loses about 5% with the lid closed, then one night it loses 38%, and nothing on the Mac says why. So WattMate logs who woke it and for how long: about an hour awake on the bad night, 12 minutes on a normal one. Pricing: - Fully unlocked 10-day trial, no card - Still free after the trial: the app list, the watts, battery health, and the most recent run and night - The minutes and the archive are the paid part - Lifetime: $19 instead of $29, the launch price for the first 100 keys, applied at checkout without a code - Yearly: $9.99 - One key works on 2 Macs Apple silicon, macOS 14 or later. The names of your apps, your watt figures and your energy history never leave the Mac. Ask me anything about how the measuring works, that's the part I like talking about.

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1mo ago

Lloyal

Very useful for people running local AI apps

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22d ago

WattMate

Maker

@zuhairnaqvi Thanks, glad it's useful!

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21d ago

showing minutes remaining makes way more sense to me than percentages👍 congrats on the launch!

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23d ago

WattMate

Maker

@kseniya_starodubova1 Thanks! That's why I went with minutes

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22d ago

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6d ago

WattMate now shows what your AI coding agents cost the battery

WattMate 1.5 is out, and it is mostly for people who run AI coding agents on a laptop.

Claude Code, Codex CLI and Cursor Agent get their own row in the app list, ranked by watts like any app
Each agent has a page with what every task cost the battery, with its project, branch and commands
A notification when an agent leaves a process running after its session ends
A notification when a long task finishes

Also new: a redesigned statistics window, a choice of panel sections, and more accurate watts.

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