Live per-app power and battery estimates
Show current watts by app and estimate how many battery minutes closing an app could recover.
WattMate
Which app is draining your Mac, in watts and minutes saved
The overview
What is WattMate?
WattMate is a macOS menu bar utility that estimates which open app is consuming battery power. It reports the power use in watts and estimates the battery time saved by quitting an app, then measures again after the app is closed to show the observed change. It is built for Apple silicon Macs running macOS 14 or later.
Around the internet
What people are saying
Public experiences, questions, and discussions.
No discussions collected yet.
Inside the toolkit
Key features
Group helper processes with their app
Attribute child processes to the app that started them so an app total includes its helpers.
Track overnight wake activity
Show which apps or services woke the Mac and how often and how long they kept it awake.
Measure the result after quitting an app
After a quit, compare the battery reading again and report whether the promised change was observed.
Where it fits
Use cases
- Find which Mac app is draining batteryUse live per-app watts and a time estimate to decide which app to close while running on battery.
- Investigate overnight battery lossReview wake counts and durations to identify what kept a Mac awake overnight.
- Check whether closing an app helpedCompare the estimate before quitting with a later measurement of the battery drain.
Keep exploring
