MacStatsBarA quick look at what your CPU is doing.
Keep a whole-Mac reading nearby, then look at the process list when you want to know which app is busy.
See CPU usage in the menu bar
MacStatsBar can show CPU as a percentage, bar or graph. The reading uses your Mac's total CPU capacity, with a whole-machine range from 0% to 100%.
Give a busy moment some context
A render, download, build or video call can make activity rise. A single high reading is not enough to identify a problem. Look at the recent pattern and what your Mac is doing at the time. MacStatsBar has 5, 15 and 60-minute history views.
Find the app behind the activity
Open Activity Monitor from MacStatsBar when you need process-level detail. Its CPU view can help you see how work is distributed. A process percentage and MacStatsBar's whole-machine percentage use different denominators, so the two figures do not have to match.
Understand a gap
CPU needs a fresh interval to calculate activity. The first reading, sleep or a long sampling gap can leave a dash or a gap in the chart. Keeping that gap visible avoids making an old reading look current.
Read more from Apple
Questions you might have
Does a CPU monitor make a Mac faster?
A monitor shows activity. It does not automatically optimise the Mac or stop apps. The reading can help you choose when to investigate with Activity Monitor.
Why does the first CPU reading show a dash?
The app needs two samples to calculate activity over an interval. Give it a moment to collect a fresh reading; sleep and longer gaps can also require a new interval.