I have no doubt that there is in fact, an app for everything, but this one just might come in handy for emergencies . . . if you aren't too busy laughing out loud to actually use it.
Called I Am Choking, this app sounds an alarm, and displays instructions on how to perform the Heimlich Maneuver in case you choke on your steak Mrs. Doubtfire style. The app flashes the message "I Am Choking" for you to alert someone nearby, while the alarm repeatedly says "I am choking" over and over again for those in earshot. However, you really can't get the gist until you watch the video. I seriously can't tell if this was supposed to be funny or not, but the makers have added a disclaimer saying it's for novelty use only. You be the judge when you read more.