Ratings and Reviews

4.5 out of 5
13 Ratings

13 Ratings

Tom542 ,

Easy to Use Tool

This performance tool was easy to use and provide useful data.

I was debuging a disk performance issue and used this tool to verify the issue and solution. Even with the focus on video performance, I used it just to measuring raw disk performance. I plan to use this tool again in the future to debug system issues or verify disk performance.

Thank you AJA Video Systems for making it available.

JanWalkerArtist ,

No manual or info

This app (Lite version) shows read and write speeds to the volume you specify. It says it is designed for supporting video product work. I was told to use it as part of trying to identify some disk failure issues with an SSD connected to MacOS Sierra. It is a pretty mystifying piece of software actually, with no information about how to use it or what its results mean. The Lite version doesn't dump its results anywhere so you use screen capture I guess for recording results. You can use it to get some sense of the relative performance of different drives on different ports and interfaces (e.g. USB vs FW).. If it encounters a problem, you are SOL. On a write error, it just stops in its tracks, leaves its datafile on the drive, and has some difficulty using that drive again. I'm not sure what finally cleared that condition. It was interesting to see how bad the performance of a FW 800 drive was through a Thunderbolt adapter when compared to the same drive using USB3.

BrianChicago ,

Needs Retina Support

I like the ease of this program, however on my Retina iMac, all the GUI, especially selecting a Target Disk, are extremely blurry.


AJA Video Systems
12.9 MB

OS X 10.6.6 or later, 64-bit processor



Age Rating
Rated 4+
© 2016 AJA Video Systems


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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