I have been using this app on my iPhone 6+ for the past 2 months without any problems. It does everything necessary to track my exercise routine. At age 70 I ride 50 to 70 miles per week. I wanted a heart rate monitor and HR alert. Sports Tracker and the Polar HR chest band meets my needs perfectly. I could not be more pleased. Thank you Sports Tracker!
Pelodark about Sports Tracker for All Sports