I think you would need something that tracks relevant per cable metrics over time to see if it is degrading. That one just says yes/no, but maybe yes/no starts to flicker around its end of life?
Looks like the paid/pro version does this.
> Cable history
> Add a cable, give it a name, and WhatCable records how it performs over time, with a verdict per cable.
Nod - that's what I was thinking. I expect it's often the connectors that deteriorate so perhaps moving them around while plugged in would tell me. Seems like a useful tool to have around.