The difference between a casual online game and a competitive practice tool is what happens to the information. Casual play ends when the session ends. Competitive practice builds a record: your throw distribution, your conditional responses after wins and losses, your opening tendencies against opponents you've played before.
The WRPSA's online game tracks this. It is designed to give you useful feedback rather than just scoreboards. If you're throwing Rock on your first throw seventy percent of the time, you'll know it. If you're showing a strong lose-shift pattern — switching gesture after every loss — the data will show it. These are the patterns opponents exploit in live brackets.
The online game also offers bracket simulation. Running brackets lets you practice the specific problem of consecutive match play: managing your pattern over multiple rounds, adjusting when an opponent is clearly adapting to you, deciding how much of your strategy to reveal in early rounds against someone you might face again later in the same tournament.
The entry cost is zero. The learning curve is whatever you make it.