how to use watchgrapher???

[Sidwin]

So i downloaded the android app watchgrapher to see the status of my watches. do you all up all the time from face up/down/3/6/9/12 to figure out exactly how far off your watch is? trying to decided about sending my other two rolex off to get serviced. they haven't been serviced ever and are about 15 years old but they are about 10-13 sec fast in every direction.