System Monitor is an application for the menu bar of your Mac, designed to inform you unobtrusively about the activity of your computer. You can retrieve up-to-date technical data any time, like process load, CPU temperature, main memory consumption, storage space, disk activity, communication on network interfaces, etc. By positioning the app in the menu bar, as least screen real estate as possible will be wasted. The program monitors your system continuously and is readily available when you need it.

You can easily configure the App to automatically stay in the menu bar of your user account. No “login item” is required, so there are no annoying windows or Dock icons when you log in.

If desired, System Monitor can also simulate the flickering activity lights of hard drives or network sockets in the menu bar. This is possible either in color or —perfectly integrated into the design of the operating system— in inconspicuous black-and-white. PC switchers who miss this feature on Macintosh computers can easily retrofit this function with System Monitor.

What’s New

Version 2.7

This version fixes an issue where the contents of the APFS overview window might not have updated automatically when the user modified the APFS configuration while the window was open.

Ratings and Reviews

4.3 out of 5
18 Ratings

18 Ratings

JamesRobertBoring ,

Nice Concept

This is a fairly light weight app. What I was the most impressed with is the fact that you can configure this entire interface to your task bar. Each "section" of this system monitor can be (re)arranged for different viewing reasons. Meaning customizable. You can just leave this systems monitor running up on your task bar (as needed) or shut the app off (as needed). I would like to see a little more color in those graphs instead of black. The colored light indicators for HDD and internet activity are a nice touch. The drop down menus (alt) on each section renders the most informative data. This app is very easy to configure due to it's unique design and concept. However, on the negative side, I found that if you get too "click happy" when first configuring, you run the risk of dropping out your already existing task bar profile. Simply quit/restart the app if this happens. The systems information that this app renders is, at best, basic. I am sure the author intended this app to be used for quick viewing and very easy access. The accuracy of this systems monitor was compared along side another program called iStat Pro from back in the widget days. Some differences, but nothing critical. I like the large percentage indication that this app brings to the task bar. Worth $5? Your call but I say support the author.

JHog1978 ,

Pretty good program, pretty bad support.

I got the trial version, and liked it. So I bought the paid version and installed it. Unfortunately, BOTH versions continued to run, even after I uninstalled it. I reached out to support, but they were of no help at all (and frankly, they were quite rude). After weeks of them sending instructions that were totally invalide, I finally I just uniinstalled both versions and reinstalled the paid version, and now it’s working (no thanks to the support team).

CD2205 ,

I love this app!

I love using this app in combination with an app that hides other menu bar icons until needed. This way I can monitor network activity, RAM usage, and CPU with history graphs, all without having to constantly open Activity Monitor when I'm working on development projects. A must have!


Marcel Bresink
4.5 MB

OS X 10.11 or later, 64-bit processor


English, German

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.