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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.


SystemLens is now FREE! You should follow me at @aaronykng 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 2.61

- OSX 10.10 Compatibility Update


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Customer Reviews

Tweaks needed

This app has incredible potential to be my alternative to activity monitor. However, the app is almost not usable in its current state. When the threshold is set to 0 for the low end, it reports every running process. This would be fine, except the list of apps is too long for the screen and when you scroll down to see other apps that have dipped below, the scroll wheel snaps back to the top of the list when you let go. This makes it annoying and impossible to manage any process that is below the top of the list- essentially making the app useless as a complete activity monitor.

Cool little app

This little app is cool and handy for checking out resource usage at a glance. I would however suggest for it to have an indication of when it was last updated, because I find myself wondering about that and regularly clicking it to see if it does something. It would also be nice if it would refresh when clicked, or some other manual way of doing that. Other than that, it’s pretty cool.

Does not work right

I have an old computer and it never shows an app over low amount even when there is only one app running and has m=no memory left. Mainly I think this is because it doesn’t seem to be able to measure background apps which is the reason I got it to find out where the memory is going. Indexing by the way is the culprit but I figured it out whithout the help of any app. I don’t really see the point of this app it isn’t even as helpful as Activity Monitor.

System Lens
View in Mac App Store
  • $1.99
  • Category: Utilities
  • Updated:
  • Version: 2.61
  • Size: 7.6 MB
  • Language: English
  • Seller:

Compatibility: OS X 10.10 or later, 64-bit processor

Customer Ratings

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