In 2018, the first randomized controlled trial of Overcome Social Anxiety was published in the Journal of Medical Internet Research, run in partnership with researchers at the University of British Columbia. It compared the program against a wait list control condition among university undergraduates, and found a between groups effect size (Cohen's d = 0.97) close to the average effect size of computer aided interventions that include therapist support (0.96), despite Overcome Social Anxiety having none.
A follow up analysis of real world users, people who found and paid for the program on their own, entirely outside the trial, later found an even larger effect (Cohen's d = 1.76) among those who completed it, evidence the results held up outside a research setting too.
Neither result was the finish line. They were the first two data points in what's now 13 published trials across three programs.