CPU
Performance and efficiency cores
System CPU split into user, system, idle, and per-core activity, with P/E labels so you can see where macOS is scheduling work.
Apple Silicon telemetry for developersWatch your
Watch your
Mac think.
CPU, unified memory, GPU, pressure, and fans — read straight off the silicon and drawn in one roomier menu-bar panel. Pick a refresh cadence, inspect P/E core activity, and hover any metric for a plain-English definition.
CPU24%
MEM57%
GPU30%
PRESNORMAL
FAN12%
Free · Apple Silicon required · macOS 13+ · v0.4.0 · Signed & notarized
// Signals
Five readouts. One glance.
The whole machine, color-coded the way the app shows it. Choose the sections you care about, then open any metric for the full breakdown underneath.
MEM
Unified memory, unpacked
Used, active, wired, and compressed pages broken out — and a live ranking of what is holding the most RAM.
GPU
Apple GPU utilization
Live device activity read from the AGX accelerator so you can see the graphics cost of what you are running.
PRES
Plain-English pressure
Normal, moderate, or high — with hover definitions and a heat-proxy list of likely culprits when memory starts to strain.
FAN
Fan RPM, off the SMC
Per-fan RPM read straight from AppleSMC, normalized to a range with a quiet / cooling / high status bucket.
Read from the metal
Numbers come from Mach, libproc, and IOKit — not a polling shell-out. The UI only ever sees immutable snapshots, so what you read is exactly what the kernel reported.
Quiet by design
MenuStat runs as an LSUIElement — no dock icon, no window, nothing to manage. Sampling runs on a serial queue and skips overlapping ticks so it stays light.
Always current
Pick a 1s cadence while debugging, 5s for balanced monitoring, or 30s for quiet residency. Heavier per-app sampling only runs while the panel is open.
ChipApple Silicon · M1 and later
macOS13 Ventura or later
FootprintMenu-bar resident · no dock icon
CadenceSelectable · 1s / 5s / 30s
SigningDeveloper ID · notarized
LicenseOpen source · MIT
// Ready when you are
Put your Mac's pulse in the menu bar.
One small download. It lives quietly up top and tells you exactly what your Apple Silicon Mac is doing, the moment you ask.
v0.4.0 · Apple Silicon required · Intel Macs show an unsupported alert · macOS 13+ · Developer ID signed & notarized