Deadline is an app designed to do one thing: terrify you into living a healthier life by showing you when you'll die.
How does it work? Well this is the unsettling bit: as well as the usual quiz questions it actually uses Apple's HealthKit data. So while it's reportedly the same normal algorithm that you'll find in most of these death prediction apps - when were you born? do you smoke, etc etc - it is actually using some credible sources to figure out the date from which your toes will point up.
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