I use the age old way to determine the the amount of power used on the swing meter, I work it out in my head and then Whack it. It works for me. If there is a Cheat Programme( Yes thats Programme) out there its just not cricket, some things are just wrong.
So if you do know of any Programme I would be all to happy to receive it.... lol
lucky. ( joking about the whole Programme thing so keep your abuse to yourself)