Methods, apparatus, systems, and computer-readable media are provided for obtaining user interaction data indicative of interaction by a user with an application executing on a computing device, determining, based on the user interaction data, a likelihood that the user failed to complete a task the user started with the application executing on the computing device, and selectively causing, based on the likelihood, a task-completion reminder to be presented to the user in a manner selected based at least in part on historical reminder consumption.