I would like to leverage ios's HealthKit to write a watch and phone app that would detect that its user may be in trouble (fall/shock). I do not want to gather the various sensor data myself because it would not work if the app is closed or the phone restarted. I see HeathKit as a mean of access to the store always available. Today I have an android app working with a service (always running) that uses the accelerometer/GPS and bluetooth to achieve the same goal and triggers the app to connfirm the problem. Am I going in the right direction? It seems that the accelerator data is not available in the HealthKit.