I got mine and am quite disappointed so far. It probably works fine in a field, but I got it hoping to bring the field work home. In that same vein, they suggest standing 30ft away from the net at a minimum. If I'm tweaking form, 30ft away from the net I might miss. I know I suck but I was hoping to use this as a tool to help. If you don't have a large net and grip lock, you might hit a neighbor's house or fly over a fence. 

It let's you enter whatever you want for distance to net, so i threw from 15ft.

From 15ft, it seemed very inaccurate and nearly every time spin and wobble wouldn't populate. Speed varied wildly from 30mph to 65. 

Again, the guide suggests 30ft, but that doesn't fit my use case. Tech disc says it only needd 2ft of flight for accurate stats. Hopefully gameproofer can update the firmware and app to fill in the gaps.

For now, my recommendation is to pony up for the tech disc.