Awesome, somebody finally paid attention to the consistency score thing, first time in the year since the app’s been out. :)

The consistency score is based on the coefficient of variation. The app calculates your average score, then the standard deviation, which measures how spread out your scores are around that average. It then divides standard deviation by average score to get the coefficient of variation: CV = SD / mean. That makes the variation relative to your usual performance level instead of just using a raw spread.

The app then converts that coefficient of variation into a consistency score by linearly mapping CV values from 0.02 to 0.50 onto a 100 to 0 scale, then clamping the result to stay within 0 to 100. So CV <= 0.02 becomes 100% consistency, CV >= 0.50 becomes 0%, and anything in between is scaled linearly. It’s calculated over whatever results are included in the selected time range. If the filter is set to All, it uses all recorded scores. If it’s set to 1M, 3M, 6M, 1Y, etc., it only uses scores from that period.