Table 2.

Number of emergency physicians rating the app listed as the one teaching a specific aspect of high-quality cardiopulmonary resuscitation best. A total of 8 emergency physicians evaluated the apps.

Specific aspects of high-quality cardiopulmonary resuscitation	HELP Notfall, n (%)	HAMBURG SCHOCKT, n (%)	Mein DRK, n (%)
The app comprehensively explains the opening of the airway	7 (88)	1 (12)	0 (0)
The app points out the problem of agonal breathing	8 (100)	0 (0)	0 (0)
The app emphasizes the importance of complete recoil of the chest after each compression	3 (38)	4 (50)	1 (12)
The app indicates that pauses in chest compressions should be minimized	7 (88)	1 (12)	0 (0)
The app helps the medical layperson to find the correct frequency for chest compression	8 (100)	0 (0)	0 (0)
The design and user interface supports an optimal execution of cardiopulmonary resuscitation	8 (100)	0 (0)	0 (0)
The app requests the medical layperson to continue with cardiopulmonary resuscitation until the arrival of emergency service	8 (100)	0 (0)	0 (0)