System Lens

Developer: Aaron Ng

Current Version: 2.61

Last Updated: 1 year ago

Download Size: 7.6 MB - Download


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!


Release Notes:

- OSX 10.10 Compatibility Update


Most Helpful Reviews

Version 2.2
Review by Lilrunna

Awesome app - I can now see whats using my CPU via systems lens!

Found helpful by 4 out of 4 people
Version 2.51
Review by T-Doggity

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.

Found helpful by 10 out of 19 people

More Reviews for Current Version

Version 2.61
Review by Bobinmo

Light info - For machines with less power, I’d call it a much greater tool that’s handy for keeping track of resources. For the entire Mac line that’s already pretty darn good with resource management all on it’s own, I’d call it a fun little add-on, but not a must have.

Found helpful by 2 out of 2 people
Version 2.61
Review by Jensen G

not bad, but concerned for the future - System lens is a handy glance at CPU-eating programs, but recently I have had issues with it. I just noticed it was taking up over 1GB of my system memory, and thus ironically causing performance problems. I looked to the developer for support, but their website is a blank page and “support” just leads to a twitter feed. I am concerned about the viability of this product, and will uninstall it to prevent system issues. We will see if the developer comes back to update or better support this product.

Found helpful by 2 out of 2 people
Version 2.61
Review by xilenteyez

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.

Found helpful by 2 out of 2 people
Version 2.61
Review by 10K Couch Potato

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.

Found helpful by 1 out of 1 people
Version 2.61
Review by JohnCcs

Background process Apps subprocess are missing - The idea of the App is very good and the implementation is very clean, the only issue is that its only include Applications, is not considering Applications subprocess or background process.

Found helpful by 0 out of 0 people