An application synchronization method for use in a terminal is provided. The application synchronization method includes acquiring an alarm registration request of a first repetitive synchronization operation, acquiring a next execution time of a second repetitive synchronization operation associated with a same application as an application of the first repetitive synchronization operation, adjusting, if a difference between an alarm time of the alarm registration request of the first repetitive synchronization operation and the next execution time of the second repetitive synchronization operation is less than or equal to a threshold value, the alarm time of the alarm registration request of the first repetitive synchronization operation according to the next execution time of the second repetitive synchronization operation, and registering the adjusted alarm time.