Can you override a Mac app's OS X version compatibility checking?
The above error is not the error provided by OS X. For comparison, this is the OS X error:



The error you have shown above will have been coded into the app specifically, and therefore not easily bypassed.

The best thing to do is contact the developer to see if they have a beta version of the app that you can test. Alternatively, wait for an update.

Also, code preventing the running of an app on a certain OS X version would usually have a good reason to exist, especially with utility software such as that. Bypassing it could have downsides…