Better than I thought.
I didnt really want to purchase a heart rate app, knowing I can check my heart rate through my watch. However, after getting this app, Im much more aware of how high/low my hearts bpm are throughout my day, as well as when Im sleeping. It notifies you when your heart rate is high (over 110) or low (under 50). Great app!!
joolioz732 about
HeartWatch: Heart Rate Tracker