Longevity Assessment
LifeTrajectory
Generic AI starts with advice. LifeTrajectory is Longevity AI that starts with your answers, estimates their impact, and links each Action Plan to the response behind it.
Founder Access. One-time payment. No subscription. 14-day refund if not useful. Educational guidance, not medical advice.
Life Expectancy Calculator
See what your answers become.
Your answers become a personalized healthy life expectancy estimate, with biological aging context, risk areas, and a focused Action Plan.
Your Longevity Snapshot Current estimate 85.8
Your Snapshot, explained Your biggest areas to inspect first +15.2
Not a fixed prediction, but a structured estimate from your profile and questionnaire answers.
The part most connected to modifiable risks, habits, and follow-up actions.
Your Longevity Map Individual factors and their estimated effect 15.2
A clear breakdown of your individual factors, their current estimated effect, and what may still be addressable.
Your 3 AI Action Plan Feedback Maps Strengths, Improvement Opportunities, Top Levers 3 maps
Choose the questionnaire-based signal you want to act on. Each map opens a focused plan linked to the response behind it.
Your Top Levers Feedback Map Loneliness Prevention: +2.3 years Top lever
Based on your answer to: How would you describe your social connections?
Reducing isolation can improve emotional steadiness, follow-through, and day-to-day resilience.
Your AI Action Plan Your original 7-day Loneliness Prevention plan 7 days
- 1Day 1 — Name one person or circle you do not want to drift further away from.
- 2Day 2 — Send one simple, concrete outreach message today instead of waiting for a better moment.
- 3Day 3 — Put one call, walk, meal, or shared errand on the calendar.
- 4Day 4 — Follow through even if the contact is shorter or less polished than ideal.
- 5Day 5 — Notice which forms of contact feel nourishing rather than performative.
- 6Day 6 — Reduce one obvious isolation default today, such as another passive evening online.
- 7Day 7 — Keep one repeatable anti-isolation rhythm for next week.
Your Progress Center Here you track your progress 60%
Who is behind LifeTrajectory
Built with a personal reason and transparent foundations.
Meet the founder, understand why LifeTrajectory exists, and see the research sources behind the estimate.
Built by Andreas Holzhäuser
Meet the founder and see the scientific foundation
Founder, self-taught product builder and father of four
Based on centenarian research and BMC Medicine
A personal reason
Why I built LifeTrajectory
I’m Andreas Holzhäuser, founder of LifeTrajectory, a self-taught product builder and father of four. One question is deeply personal to me: What can I do today to remain physically capable, mentally alert, and present for my family for as long as possible?
I hope to live long enough to see my great-grandchildren grow up. That ambition led me to build LifeTrajectory: not as a medical promise, but as a transparent educational tool that turns longevity research into understandable next steps.
Andreas Holzhäuser Founder and developer of LifeTrajectory
Transparent foundations
How the calculation is grounded
The LifeTrajectory calculation builds on this research-based calculator derived from centenarian studies.
View the original calculatorLifestyle risk factors and residual life expectancy at age 40, BMC Medicine (2014).
Read the full studyLifeTrajectory adapts these foundations into an educational estimate and personalized feedback. It is not a clinically validated prediction, diagnosis, or substitute for medical care.
See the methodology and all sourcesWatch the idea
Your longevity result should not end with a number.
See how this longevity assessment moves from your estimate to the movable range and one concrete next step.