I like that it has every lifesaving method in one place, so if you don't know what's best for an individual patient or your practice/hospital then this helps with all of them! It also allows me as well have access at anytime from anywhere which i think can be helpful when performing rescue breathing during transport situations where there isn´t enough space around my chest area etc..It would benefit more by adding other vital signs suchas blood pressure measurements(not just O2 saturation), heart rate monitoring (when applicable) but overall very good app!!