Originally Posted by R Magnuson
Actually it doesn't do too bad of a job. Bear in mind that the scale of the readout on a smart phone is large and doesn't compare to actual scale readings. For general purposes it's good. Note with the sales price it's a give-away as you are paying for the Prodigy brake controller.
Looke it up, got an idea of how it is supposed to work. Involves a lot of physics and mathematics. Claims to have only 5% accuracy. That is not good enough.
Good scales should be accurate to within 1% or less.
5% of 3000 lb is 150 lb, and that's plus or minus. your reading can have a 300 lb range.
Stick to scales.