Seraph: Life Expectancy
Longevity and lifespan
Free · Designed for iPad. Not verified for macOS.
Seraph estimates how long you might live, and shows you the range around that number instead of a single figure.
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.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Contact Bruce now works for everyone: it opens a form inside the app instead of relying on your mail app, which some devices did not have set up.
Bug fixes.
The developer, Hailcat LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Financial Info
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hailcat LLC
- Size
- 1.6 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Alcohol, Tobacco, Drug Use or References
Contains
Health or Wellness Topics
- Copyright
- © 2026 Hailcat LLC