A great article outlining the importance of using visual mobile analytics to measure the user experience to increase customer retention for your app. The author goes through various models of Onboarding and how to track how effective they are.
This feature gives you an inside view of where users are engaging with your app. Visual touch heatmaps will help you to understand your users’ behavior, the reasons for their actions and which parts of the screen they are focusing on.
Take the log-in screen shown below. It includes three calls to action (CTAs). The second one is hardly being tapped on. So, you might consider removing it in order not to confuse users with too many CTAs and to make the experience more fluid.