An action notification system includes an exercise information measurement apparatus that includes an action determiner to determine an action of a user based on a detection signal of a body motion sensor, and a transmission controller to cause a communicator to transmit characteristic information of a detection signal waveform of the body motion sensor, which corresponds to the determined action, and an exercise information measurement apparatus that includes a characteristic information acquirer to acquire the characteristic information transmitted from the exercise information measurement apparatus via a communicator, and an output device controller to cause a vibrator to operate in accordance with the acquired characteristic information.