is this app saying that your height/weight proportion for a male who is 5'9" is 180 lbs? wow! I am 5'6" 185 and according to the navy standard I am supposed to weigh 155 (170 max). but i pass my tape test at 11% BF so they can't do anything to me, except get angry when they have to shell out the $$$ for the custom fitted wetsuits.
usually for males the standard falls between 21.5%-23.5%, that is what I have seen on most apps, as well as military. it seems to be the norm. this % will fluctuate depending on which method they use, some methods are faster and easier, but don't account for bone structure(they are created for those w/ average build). if it is higher or lower than that i would be surprised. normally it just reads "weight proportional to height".
ps u run 12 miles/week! wow, i don't think i run that and they make us run as well as running on my own!