Seraph: Life Expectancy

Seraph estimates how long you might live, and shows you the range around that number instead of a single figure. Twelve questions about your health and background. No lab tests, no bloodwork, no account, no sign-in. You get three things: - A life expectancy: the average age reached by people who answered as you did. - The range around it. Eight in ten outcomes fall between two ages, and that spread is usually wider than people expect. It is the part that actually matters for planning. - A survival curve: your chance of still being alive at each future age. HOW IT WORKS The estimate starts from published US government and actuarial mortality data: Social Security and CDC life tables, and actuarial research on how mortality improves over time. Your answers adjust those baseline rates. The app describes the method on screen rather than hiding it. WHAT IT IS NOT This is an educational illustration built from population statistics. It is not a prediction of your lifespan, it is not medical advice, and it is not a diagnosis. No model can tell an individual person when they will die. This tool is calibrated to adults aged 40 and older. If you are younger, the app says so on your result and explains what that means. PRIVACY Your answers are used to calculate the estimate on your device and are not saved. We collect anonymous usage data that carries no identifiers, and we do not collect your date of birth. Built by an actuary.