worst app. dont rely on it unless u wanna give urself a heart attack. It says 77 when actual hr monitor shows almost 160 tried multiple times. Clean lens reboot etc same. Its cute little app but absolutely does NOT do what it claims it does. Sorry I dont have 0 stars so here it still gets 1
Until you get to measure your heart rate u will be reminded to join then buy then an add and once u skip that reminded again for pro and another add and another after checking your heart rate after 38 minutes. I wish I could remove this app from App Store
Whiskas12 about Runtastic Heart Rate Monitor, v2.0.2