Needs mid-workout interuption protection

I have had my sensors for Irunner and Icardio for about 6 days. I have completed four workouts but, have only been able to record two. The first failed attempt I moved the heart sensor-it was slipping. The comunication with my iphone froze and needed to be restarted. All workout data lost! Next was a near one hour workout. It is not unreasonable that the ant+ antenna on the bottom of the phone would come loose. Well, it did but, when the ant+ antenna is removed from the iphone the app quits. All workout data is lost!. This app needs a memory for mid-workout interuptions. I should be able to re-start the app and carry on, I should be able dislodge the ant+ without a crash and complete loss of mid-workout data. The only data stored is completed workouts-which is fine but, so far, data from 2 of 4 workouts is not quite what I am looking for. Ill see what next week brings.

crooj about iCardio Heart Rate Training