I'm working on a WordPress site that is for a noble cause. The site owner wants to ask visitors to take a pledge and then click on a button noting they took the pledge which then causes the counter displaying how many folks have taken the pledge to increase. So instead of site visitors being displayed on a visible counter, we want to reflect those who have taken "the pledge" in real-time.
I've searched WP plugins, "counters", counter +form to no avail. Is anyone aware of anything that would fit this need and can be used on WP?