Abstract: A server system receives, from client devices, a first plurality of messages associated with user actions in a first version of an application. The first plurality of messages includes performance indicators relating to the first version. The method further includes receiving, from client devices, a second plurality of messages associated with user actions in a second version of an application. The second plurality of messages includes performance indicators relating to the second version. The second version of the application is more recent than the first version of the application. Subsequently, compare the performance indicators relating to the first version of the application with the performance indicators relating to the second version of the application. In response to a determination that a difference between a respective performance indicator in the first version and the second version satisfies a threshold value, provide a report of the respective performance indicator.