Not exactly what you're looking for, but Mixpanel has something they call Funnel Analysis. If your registration has multiple steps, funnel analysis will tell yo

Not exactly what you're looking for, but Mixpanel has something they call Funnel Analysis. If your registration has multiple steps, funnel analysis will tell you where you are losing customers. Mixpanel can tell you that a customer clicked the invite link and then stopped filling out the registration form half way through. It's then your job to figure out why that might happen.