Mac App Store

Mac App Store

Mac App Store is the simplest way to find and download apps for your Mac.

To download System Lens from the Mac App Store, you need a Mac with OS X 10.6.6 or later. Learn More.

System Lens

By Aaron Ng

Open the Mac App Store to buy and download apps.


Follow me at @aaronykng and @delve for new apps.

System Lens is a simple way to quickly manage tasks and resource usage on your Mac.

- Easily check your system usage at a glance from the status bar.
- See which applications are heavily using resources.
- Quickly end programs you no longer want running.
- Highly customizable.

Heavy resource usage can sometimes cause your Mac to get warmer, slower and sometimes even cause your battery to drain faster.

System Lens sits quietly in your Menu Bar and periodically updates itself to display the amount of resources being used by your Mac.

Click on the Menu Bar icon to bring up the System Lens panel which sorts all of your running applications by their amount of resource usage. From here, you can decide which applications you don't need open anymore and close them right from the Menu Bar. (Just make sure you save first!)

System Lens is also feature packed: set filters, custom usage thresholds, customize your results and more!

Learn more at

Need support? Visit us at or tweet us at @systemlens.

Feel free to follow or tweet me (the creator, Aaron) directly at @aaronykng and follow @delve for future app updates!

What's New in Version 2.51

- Fixed misaligned label in rate window.
- Added monochrome icon support.
- Updated CPU measuring algorithm.


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Customer Reviews

Reviews are incredibly overstated for this app

Based on previous reviews stating that running apps can be “turned-down” or “turned-off” I assumed (my mistake) that I could limit resource usage to certain CPU-hungry apps like Handbrake with this tool. This is not the case at all… You can certainly force quit applications from the status bar, but the “highly custimizable” statement made by the developer is just nonsense. Users unfamiliar with the functionality of their Activity Monitor may benefit from the use of this app, but it was purely a waste of money in my case.

Mill would be proud.

This app is delightfully utilitarian, with a clean, simple interface and functional controls. Bravo.

great App

Nice and easy interface and Easily closes resource hungry apps.

System Lens
View in Mac App Store
  • $4.99
  • Category: Utilities
  • Updated: Jan 08, 2014
  • Version: 2.51
  • Size: 6.5 MB
  • Language: English
  • Seller: Aaron Ng

Compatibility: OS X 10.7 or later, 64-bit processor

Customer Ratings

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