I'm looking for help finding a good fitness app. I have the Zepher hxm heart rate monitor. I am looking for an app that will track constant calories burned using data sent from the hrm. It seems that most of the apps either don't use the data from the hrm in its calorie count or they only use the average heart rate from the work out. I would like the app to accurately and continuously track my calories burned not just an average from the work out. A lot of my work outs may are interval type where my heart rate is up high only for short bursts of the work out. Any help would be appreciated.