Spanlet: Lifespan Calculator

Answer a 2-minute quiz and see your estimated lifespan right away. No paywall, no sign-up, no waiting. Spanlet is a lifespan calculator that shows how long you might live with your current habits, and how much longer you could live if you changed a few things. WHAT YOU GET • Your life expectancy estimate, in years, the moment you finish the quiz • Time left as years and days, total days, or hours • "Possible with your habits": how many years your estimate gains if the habits you can change were at their best • A clear list of what moves your number, each habit shown in years (for example, sitting 8–10 hours a day: −1.0 yrs) TRY A WHAT-IF Tap any habit and pick a different answer. Your estimate updates instantly. Exercise more than 5 hours a week? See it go from 80.3 to 84.8. You can fix any answer at any time. No need to retake the whole quiz. WIN BACK TIME, EVERY DAY The Today tab has 6 healthy habits: a 30-minute walk, 7+ hours of sleep, 8 glasses of water, 5 servings of fruit and veg, a smoke-free day and an alcohol-free day. Check them off in 30 seconds and watch "+30 min won back today" add up. Keep your streak going for 7 days and beyond. YOUR LIFE IN WEEKS See every week of your estimated lifespan as one small square. Weeks lived, this week, and the weeks ahead. A quiet reminder that time is limited, and a push to make it count. HOME SCREEN WIDGET Keep your time left and today's check-ins on your home screen. One tap opens Today. A QUIZ THAT RESPECTS YOU • 13 short questions: age, sex, country, height and weight, smoking, alcohol, activity, sleep, fruit and veg, sitting time, stress, health conditions and family history • Skip or go back to any question. Your progress is saved after every answer • Metric or imperial units • Hide the calendar date if you only want to see years HOW THE ESTIMATE WORKS Spanlet starts from average life expectancy for your country and sex, adjusts it for your current age, then adds or subtracts conservative amounts for each habit. The result never drops below your current age plus one year. PRIVATE BY DESIGN No account. Your answers and check-ins stay on your phone. Made for anyone who wants a clear look at their time left, more urgency in daily life, and a simple reason to build healthy habits for longevity. Estimates are for motivation and entertainment only, not medical advice. Talk to a doctor about your health.

First release: 2-minute lifespan quiz, what-if for every habit, daily check-ins, life in weeks and a home screen widget.