As to the accuracy, well I'd be the first to say it would not stand up in the court room, but for a simple timber management job, or hunting as its' designed for, yes. Our declination here is a positive 1-1/2 degree. So I choose to use the compass in conjunction with the boundary lines the program gives, which are really very close, and I stayed inside the line for good measure. The one feature I really was impressed with was the parcel info option, which gives the owners name based off the location of the cell phone. So for hunting or any other outdoor activity, it's possible to know within a very close proximity of where you are standing, and who's the owner.