The software is simple enough to use, and the features are that of a basic metronome. Additionally, it will allow you to accelerate your tempo in a controlled way (though oddly, not decelerate).

It allows a higher resolution of tempo to the nearest 10th of a BPM which is useful if you are trying to find the exact tempo of something.

One minor weakness is that it doesn't start right when you click START. It takes a moment. So if you are trying to match a tempo, you can't start the metronome right on a beat. Also, any changes you make to the tempo causes an interruption in the time, again, which makes real-time tempo matching impossible.

Perhaps that is something that could be implemented in a future version.