A system monitors applications that provide a single content page by monitoring network traffic associated with single page transitions. The network traffic may be monitored by mechanisms provided by a network browser that updates the page. Updates to the page, called transitions, may be detected when they first begin. The network traffic associated with a single page transition from a first content page to a second version of that content page may be tracked through the network traffic viewing mechanism. When the network traffic is determined to have concluded, the end of the single content page transition is determined to have occurred. Metrics may then be generated from data collected during the transition, and the data and metrics may be reported to a controller.