Fair at best.
As a crop consultant, I soil sample roughly 30,000 acres per year. I've tried several different soil apps, agworld, agphd soil app, Sirius by SST, etc. Of all of them, this is the worst. Save your time on this app until it gets an overhaul. I had to use this for a customer that uses agworld software, had nothing but trouble. Sirius is much more user friendly, and looks like agworld will be very hard to easily smart sample from old grids. Maybe they will get it right in a few years.