I Tried the Death Clock App at 71: AI Death Date vs. My Real Biological Age
The short version: Death Clock says I will die on Friday, September 30, 2044, at age 89. If I follow its plan, it says I could make it to April 26, 2047, at age 91. It could not give me a biological age without bloodwork, and the app itself labels its estimate as only 40% clinically reliable. I am aiming for 200, so I am not buying the 89.
Someone on Quora asked what tests you should take besides the ones Death Clock suggests. That got me curious about the app itself, so I downloaded it and ran it on myself. I am trying to live to 200, so I wanted to see what an AI thinks my odds are.
What Death Clock Is
Death Clock is an AI longevity app that launched in late 2024. You answer a set of questions about your health and habits, and it gives you a predicted date of death, a life expectancy, a biological age, and a plan of changes that it says could add years. The company says its AI was trained on more than 1,200 studies covering over 53 million people. It comes with a free trial (mine was two weeks), and after that it is a paid subscription. You can pay monthly, or get a discount if you pay for a year up front.
What It Asked Me
The first thing it asked for was access to my Apple Health data. The easiest option on the screen was “allow all access,” but I did not do that. I only shared the numbers from my Hume scale (that’s an affiliate link; I may earn a small commission at no extra cost to you): my weight, body fat and the other body composition readings. If you try it, think about what you are handing over before you tap “allow all.” You can pick just the categories you are comfortable sharing.
The rest was a quick questionnaire, and it took me less than five minutes. It asked about:
- My age and height
- My glucose levels
- How much I sleep each night
- How often I eat vegetables
- How much cardio I do and how often I lift weights
- How old my oldest grandparent was when they died
- Whether I am married, whether I have kids, and whether they live with me
- How supportive my community of friends is
Plus a few more along the same lines. I liked that it asked about family and friends, not just diet and exercise. Social connection is one of the things that shows up again and again in longevity research.
My Death Clock Results
After the questions, it showed me a series of cards. The first one is a “Save the Date” card with a skull and a tombstone on it: Gary is going to die Friday, September 30, 2044, at age 89.
Next it listed my three most likely ways to die: cardiovascular disease, hypertension and cancer. That is not surprising. Those are the top killers for most people my age.
Then came the “true potential” card. If I follow its program, which it calls The Life Lab, it says I could live until April 26, 2047, at age 91.
The last card compares my two paths side by side:
- Years left: 18 on my current path, 20 on the better one
- Full moons left: 215 vs. 246
- Weekends left: 932 vs. 1,066
The weekends number is the one that hit me. Counting weekends makes the time feel a lot shorter than counting years.
On the main dashboard it shows a life expectancy of 88.9 years, with 91.5 as my potential. The biological age box just says “Bloodwork Needed,” and every single card carries a warning that it is an estimate only, with a 40% clinical resolution score.
My Death Clock cards: the predicted date, my most likely risks, the date its program promises, and my “life left.”
How It Compares With My Real Tests
A questionnaire is a guess. Here is what my actual testing says. My blood-based biological age came back at 56. My full body MRI found nothing urgent and no cancer. And I have a TruAge methylation test in the mail. Death Clock gave me no biological age at all, because it wants bloodwork first. My real bloodwork already says my body is 15 years younger than my calendar age. That is the gap between a questionnaire and an actual test.
The dashboard: 88.9 years, with biological age locked until you add bloodwork.
What Its Longevity Plan Told Me to Do
After the results, it offered to work with me on recommendations to add years to my life. I assume that is where the paid upgrade comes in. It offered a monthly fee, or a discounted price if you pay a year in advance. I did not grab a screenshot of the price, so I will not quote it, but it felt too high to me for a simple app that keeps selling you products while you use it. Its best-case plan only adds about two and a half years to my estimate. I am aiming for 200, so that is not much of a plan for me.
Signing Up and Canceling
Heads up before you download it: the app makes you go through the payment process just to start the free trial, so you have to hand over your payment details up front. If you don’t want to be charged, you need to cancel before the trial ends. I signed up and then had to cancel on the Death Clock website, not in my iPhone’s subscription settings. It wasn’t hard, but it wasn’t super easy either.
Is Death Clock Worth It?
I was curious to see what it would say, and it was fun to look at. But in my opinion, it is mostly a tool to sell you other things, like blood tests. As soon as I finished, the main screen pushed me to schedule bloodwork before it would even give me a biological age. One thing to keep in mind: I have not seen any independent study showing how accurate its predictions are. I treat the date as motivation, not a measurement. If you want to know where you really stand, real tests beat a questionnaire, and you can use AI to read your results in plain English.
Have you tried Death Clock? What date did it give you? Tell me in the comments.
You can see everything else I do in my protocols, follow my numbers on my tests and stats page, and check out my fitness routine.
Live long and prosper,
Gary
A note from Gary: I am not a doctor, and I am definitely not your doctor. I’m a 71-year-old running a public experiment on myself, and this is one man’s experience, not a diagnosis. Talk to your physician before changing anything.
These are products I use on my push to 200. I only put something on this list after I’ve tested it on myself. The links are affiliate links, which means I may earn a small commission at no cost to you.
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