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Best Mac System Monitoring Apps

Best Mac System Monitoring Apps

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Your computer is equipped with a lot of sensors so that the system can keep an eye on the health of the hardware.

For example, macOS systems have a built-in system monitoring utility called Activity Monitor to manage memory usage, fix slow apps, and troubleshoot various many other issues. One of the most common uses for the activity monitor is to force quit processes that are either stuck or eating to much memory.

Best Mac System Monitoring Apps

Alternatively, users can use third-party Mac monitoring apps to boost performance.

Best Mac system monitoring apps of 2026

Editor’s choice
iStat Menus logo

iStat Menus

Editor's rating:
Real-time system statistics
Weather integration
Customizable alerts
Customizable interface
All-in-one

MacCleaner Pro

Editor's rating:
System cleanup
Disk space optimization
Duplicates management
App management
Thermal & fan monitoring
TG Pro logo

TG Pro

Editor's rating:
In-depth temperature monitoring
Maximum temperature recording
Hardware diagnostics
Advanced fan control
Smart mac care

CleanMyMac

Editor's rating:
User-friendly dashboard
Effective scanning and cleaning options
Various maintenance tools
Built-in malware remover
Budget-option
XRG logo

XRG

Editor's rating:
CPU and GPU monitoring
Battery status health tracking
Network throughput monitoring
Memory usage monitoring
Legacy speedup

MacBooster

Editor's rating:
Fast scanning
User-friendly UI
Virus and malware scan
Great cleaning features
Editor’s choice
iStat Menus logo

iStat Menus

Editor's rating:
Starting price: $11.99/unit
Main features
  • Real-time system statistics
  • Weather integration
  • Customizable alerts
  • Customizable interface
  • Unmatched customization
  • Neural Engine activity tracker
  • Lightweight
  • One-time purchase option
  • Occasional weather location bugs
  • Weather paywall
Summary
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Bjango’s iStat Menus is one of the best Mac monitoring apps available. Best for power users, this app offers all the features needed to monitor macOS systems fully.

It includes granular control over fan speeds, highly detailed CPU, GPU, and disk usage information, and detailed weather forecasts.

iStat Menus 7 is lightweight, highly customizable, and offers real-time monitoring with no impact on system speed. Users can get iStat menus for as low as $9.99 per month with a Setapp subscription or for $11.99 as a one-time purchase via the official iStat menu website.

All-in-one

MacCleaner Pro

Editor's rating:
Starting price: $3.33/mo
Main features
  • System cleanup
  • Disk space optimization
  • Duplicates management
  • App management
  • Fast, customizable and detailed scans
  • AI-powered duplicate detection
  • Detailed app management
  • Pricing and excellent customer support
  • Requires acclimation for newcomers
  • Lack of malware detection
Summary
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MacCleaner Pro, developed by Ukraine-based macOS experts Nektony in 2011, is one of the best Mac optimizers available.

The Mac optimization software not only lets you clean your system and manage disk space, but also helps you find duplicate files, properly uninstall applications, update apps, and more.

Users can download the software and test out the features with a 2-day free trial and after that subscribe the service for as low as $3.33 per month, including a 15.51[currency] discount.

Special offers
View offers
2-day free trial with MacCleaner Pro
Monthly savings of up to $22.18
20% educational discount
Thermal & fan monitoring
TG Pro logo

TG Pro

Editor's rating:
Starting price: $10/unit
Main features
  • In-depth temperature monitoring
  • Maximum temperature recording
  • Hardware diagnostics
  • Advanced fan control
  • Remarkable diagnostic power
  • Seamless Mac fan control
  • Remote notifications
  • One-time payment option
  • Overwhelming for beginners
  • Occasional notification loop issues
Summary
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TG Pro, known as Temperature Gauge Pro, is one of the best tools for macOS thermal management.

The app includes temperature monitoring for all Mac models, and core-specific temperature tracking for Apple Silicon Macs.

Plus, it records maximum temperatures for each sensor and offers a powerful hardware diagnostic system that can identify sensor malfunctions and battery issues. The app is available for a one-time purchase of $10.

Smart mac care

CleanMyMac

Editor's rating:
Starting price: $3.33/mo
Main features
  • User-friendly dashboard
  • Effective scanning and cleaning options
  • Various maintenance tools
  • Built-in malware remover
  • User-friendly dashboard
  • Effective scanning and cleaning options
  • Various maintenance tools
  • Built-in malware remover
  • No restore points
Summary
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With over 15 years of experience, MacPaw has become one of the leaders of the Mac optimization industry – with good reason. Its biggest success is CleanMyMac, a straightforward Mac optimization solution.

It’s equipped with numerous tools to improve your Mac’s performance, including extensive smart scans, file cleanup, anti-malware, and app management. Catering to all customers, there are flexible pricing options, including a 30-day money-back guarantee on top of a 7-day free trial and discounts on longer subscriptions.

Special offers
View offers
40% discount with CleanMyMac
30% educational discount on CleanMyMac
Free Mac optimizer for 7 days
30-day money-back guarantee with CleanMyMac
Budget-option
XRG logo

XRG

Editor's rating:
Main features
  • CPU and GPU monitoring
  • Battery status health tracking
  • Network throughput monitoring
  • Memory usage monitoring
  • Ultra lightweight
  • Fast refresh rate
  • Privacy-first architecture
  • Free version
  • Outdated aesthethic
  • View-only app
Summary
Hide summary

XRG is an open source macOS system monitoring tool for users who prefer a graphical floating interface over menu bar icons.

The app tracks CPU activity, memory usage, network activity, and system temperature. Beyond that, it also includes current weather and stock market data.

The software is free to use and runs with minimal resource usage, making it ideal for users running older Mac models.

Legacy speedup

MacBooster

Editor's rating:
Starting price: $4.99/mo
Main features
  • Fast scanning
  • User-friendly UI
  • Virus and malware scan
  • Great cleaning features
  • Fast scanning
  • User-friendly UI
  • Virus and malware scan
  • Great cleaning features
  • Limited customer support options
  • Unnecessary download insurance
Summary
Hide summary

One of the great things about using a Mac is that they’re incredibly fast. Eventually though, Macs start to show signs of age and slow down drastically. Mac optimization software aims to extend your Mac’s lifespan by freeing up space and gaining back some lost speed. MacBooster was developed by Chinese software company IObit, which boasts over 250 million downloads of its various system utilities. Now up to its eighth iteration, MacBooster scans your system for junk files that are taking up vital space and provides virus and malware protection. You can also search your Mac for old, large, and duplicated files – enabling you to free up space and increase your system’s speed. You can get MacBooster 8 by signing up for a yearly subscription or by purchasing a lifetime license. Although there are no free trials available, every purchase comes with a 60-day money-back guarantee, so you’re able to test out all the features.

Special offers
View offers
Mac optimization for $4.99 a month

FAQ

Why does my Mac display 'High Memory Usage' when I'm not using many apps?

macOS computers are designed to use as much of Unified Memory as possible to keep the system fast and responsive. To determine whether you actually need more memory, look at the Memory Pressure graph in Activity Monitor.

  • Green: your Mac is healthy
  • Yellow: your Mac might need an upgrade in RAM
  • Red: your Mac is in critical need of more RAM

Can third-party apps 'Force Quit' a frozen app on my Mac computer?

Yes. While in the past the only way to force-quit apps was through the Activity Monitor, most Mac optimization apps now allow you to kill processes directly from your menu bar.

Can I use third-party monitoring apps instead of Activity Monitor?

Yes, all macOS monitoring apps must be certified by Apple. As a result, all the apps operate within Apple’s security sandboxes.

Why is my Mac computer's 'System Data' taking up so much space?

System Data consists of macOS snapshots, app cache, and partially downloaded updates. With a third-party app like MacCleaner Pro, you can view a detailed breakdown of these files and choose what to delete.

Why does my Mac feel slow even though CPU usage is low?

For modern M-series Macs, that usually boils down to Memory Pressure or Disk I/O. For example, if your SSD is almost full, the computer struggles to use swap memory effectively, causing the system to lag.

For older models, the reason is almost always hardware-related, including slow physical disks (HDDs), thermal throttling, and RAM exhaustion.

Should I monitor my 'Battery Health' if my Mac is always plugged in?

Yes. Even though modern Macs have a feature to optimize battery charging, keeping the battery fully charged in high heat can still damage its health.

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