Can't live without your smartphone? It just might help save your life or someone else's, one day. The American Red Cross first aid app, available on Android and iOS, has advice on administering first aid and preparing for emergencies.
When you first launch the app, you'll see a large notice asking you to tap on the Emergency tab, if you're facing an emergency situation. Once you tap on the Emergency tab, you'll see a list of emergencies like allergies, choking, and poisoning. Some of the emergency situations will provide a quick list of advice and may include a link to dial 9-1-1 directly from the app. Other situations may ask you a few questions with advice on what actions to perform and may even include a short video on how to perform those actions.
The Red Cross app goes over an extensive list of first aid scenarios, helps you prepare for emergencies, and even lets you take interactive quizzes. It's a fairly large app at more than 20MB, but all the content is preloaded, so the app will work even without a network connection.
That's it. Hopefully you'll never need to refer to the Red Cross first aid app for an emergency, but at least it'll be there, in case you do.