CPU activity
Switch between CPU load and free capacity.
BackTempo Sensor · macOS
Your Mac.
At a glance.
CPU, memory, storage and network activity in your menu bar and a focused dashboard. Check what matters, then get back to your work.
macOS 13+ · Apple Silicon & Intel · No account
Awaiting App Store approval. Sensor App Store listing — the listing may not be available until approval.
This page describes the Mac App Store edition. Hardware temperatures and individual process inspection are not included.
Local by designMonitoring without the internet
Your indicatorsIndependent menu bar choices
Three viewsFrom quick values to detailed charts
No trackingNo ads or third-party analytics
Useful system readings
Look. Understand.
Keep working.
Follow current values and the last 1, 3 or 5 minutes. Choose an update interval from 3 to 30 seconds.
Storage at a glance
Available and used space on your system disk, in GB or MB.
Memory, explained
Estimated available RAM, plus wired, compressed, active and inactive memory.
Swap usage
See how much swap macOS has allocated and is using.
Network traffic
Follow download and upload rates across Wi-Fi and Ethernet.
Battery status
Charge level and power state on supported Mac notebooks.
Choose your view
The detail you need.
The space you want.
Cycle through layouts with the header button or select one in Settings. Your choice stays with you between launches.
Compact view
Just the readings for a quick check.
Charts
Short, filled graphs with readings in each card header.
Large charts
Larger graphs and additional details when you want a closer look.
Inside the app
Made for your menu bar.
Choose menu indicators independently of dashboard cards, arrange your preferred order and set an in-app low-storage warning.
On your Mac
Your readings
stay with you.
Sensor needs no account or internet connection and does not send your readings to a server. Recent chart history stays in memory; your preferences are stored locally.
Copy Report places a system summary in your clipboard only when you choose to copy it.
Read the Sensor privacy policyNeed a hand?
Start with the quick answers.
Learn how to open Sensor, choose your readings and understand storage, memory and network values.
Open Sensor support