A heart rate display system is disclosed herein. The heart rate display system includes a smartphone device having a display device with at least one windowed area. The windowed area displays a rendering of a heart which encompasses greater than fifty percent of the at least one window area. The heart rate display system further includes an external heart rate monitor device communicatively paired to the smartphone device. The external heart rate monitor device continuously detects a user's heart rate. The heart rendering is a heart animation image representing the user's heart such that when the user's heart rate is at a baseline heart rate. The heart animation image represents the baseline heart rate and upon a change in the user's heart rate and the heart animation image changes to represent the change in the user's heart rate.
