Written against the Emergency First Response Primary Care and Secondary Care syllabus, plus a remote-and-prolonged-care module for when help is hours away. It follows current ILCOR/ERC resuscitation guidance. It does not replace hands-on certification — EFR credentials lapse after 24 months, and chest compressions cannot be learned from a screen. Where this app and your instructor disagree, your instructor wins. Emergency number 112 across Europe, 15 for the SAMU in France. Everything you do here stays on this device.