Five phone-based Arccos alternatives, compared on what they cost, what hardware they need, and how much strokes gained they give you. Prices checked on each vendor site, and the trade-off of tracking without sensors spelled out.
You need about a 5 handicap to break 80 in a normal round. A 7 to 9 does it on their best days. Here is the stat line of a golfer who shoots in the 70s, next to every level from scratch to 30.
A scratch golfer averages 74 to 76, not par. Here is the stat line behind a 0 handicap, side by side with every handicap from 5 to 30.
A scratch golfer makes almost nine birdies for every double bogey. A 15 handicap makes thirteen doubles for every birdie. Here are birdies and doubles per round from 0 to 25, with the rest of the stat line next to them.
A scratch golfer drives it about 60 yards past a 20 handicap, but a 5 and a 10 hit it almost the same distance. Here is the average drive by handicap from 0 to 30, with the rest of the stat line next to it.
A scratch golfer takes a penalty about every other round. A 25 handicap takes one every four holes. Here are penalty strokes per round from 0 to 25, with the rest of the stat line next to them.