Embodiments of the present application relate to a method, apparatus, and system for waking up an app. The method includes adding an application (app) to a wake-up alarm group comprising a plurality of apps, adjusting a plurality of alarm wake-up times corresponding to the plurality of apps, wherein the plurality of alarm wake-up times corresponding to the plurality of apps are adjusted to be consistent, and waking up the plurality of apps belonging to the wake-up alarm group according to the adjusted alarm wake-up times corresponding to the plurality of apps belonging to the wake-up alarm group.