Not sure about all the negative reviews. I ordered the full system, recieved in less than 4 days. I use the link everyday with no issues. When I pull out a club, i double check that they aren't loose which they have not been. I take practice swings before every hole. Arccos only tracks shot when you hit the ball, not on practice swings like some people say. The only time Arccos misses a shot is on a whisper soft 56* or 60* bump. Easy fix. The putter will miss a few strokes on 1-2' putts. After putting each hole, I check the app while walking to the next hole. Adjust the flag and putt distance if needed. The dashboard has been great! It clearly states more info than one needs as an amatuer golfer but that is why we all buy the system. I am clearly an awful putter, lol. In the end, I love Arccos and wish I would have bought it sooner. I paid full price for the system.. Thank you Arccos!! Jeff, Franklin TN