Identifiers across application instances

In some examples, a method includes receiving, by a supervisor component executing at a computing device, a request to execute an application, determining a current user of the computing device, and determining a reset state of the application. The method may also include generating, based on the current user of the computing device, the reset state, and an application identifier for the application, a unique identifier that does not include personally identifiable information for the current user, sending, to an application service provider, the unique identifier and one or more requests for information, and, responsive to sending the one or more request for information, receiving, from the application service provider, state information associated with the current user and for the application.