It is an interesting app that does EXACTLY what the description reads. Yes, it is free. Yes, it works as described. It could use a bit better instructions though... It took me a second run to understand that any kind of results would only be provided if I marked the "Continuously log results" box, with the corresponding location for the log file to be written to. But since I use iStats to monitor CPU usage/frequency/temperature already, I could see what was going on that way. Come to think of it, perhaps they could include that in the GUI as well... But hey, it's completely FREE! Side note: It's incredible how stable and cool the Xeon 8 Core in the iMac Pro (2017) runs... Even under full load for extended periods of time!

This app does exactly what it says it does; its easy to use and it works well.

No indication of how long a test will run. I let the test run for 10 minutes of maxed out CPU usage and was provided with no indication of when the test would complete or how well it was doing. No results provided after I stopped it, even though it indicated they would be provided in the "Endurance Results" folder. So basically, I just heated up my CPUs to their max for 10 minutes for no reason. Thanks Turnbelly for simply stressing out my computer for nothing.

Started running it and after 1.17 minutes it froze up and stopped responding. A bit concerned using a stress app with no ability to monitor temps. After it froze I restarted app allowing it run for a few minuted until center bottom of macbook Air became very warm. I guess it works but too limited in information it provides in tests.