DayvestDid today make your future better — or worse?
Dayvest is a personal longevity tracker. Log your day in about a minute and see your habits as deposits and withdrawals — measured in days of healthy life.
Try it free →Free right now · No account needed · Works right in your browser · Add to Home Screen
No one can ever tell you how long you'll live. Dayvest shows the healthy days you added — or spent — today.
The invisible cost
In the U.S., the gap between how long people live and how long they stay healthy is about 12.4 years — the largest of 183 countries.
Daily habits — sleep, movement, smoking, drinking, stress — shape that gap. But day to day their effect is invisible, until it shows up decades later. Dayvest makes it visible today.
Source: Garmany & Terzic, JAMA Network Open, 2024.
How it works
Your health, as a balance sheet
Log your day
Sleep, activity, nutrition, smoking, alcohol, stress, social connection — tap what applies. About a minute a day.
See the deposit — or the withdrawal
Every habit becomes days of healthy life gained or lost. Your total is your health capital.
Watch your capital grow
Follow the trend by week, month and year. “What if…” shows what a change would be worth before you make it.
Our principles
Numbers, not noise
Built on research
Every factor is grounded in peer-reviewed studies. Sources are in the app’s Knowledge Base.
No guilt, no lectures
A bad day is just a withdrawal. Tomorrow is another chance to invest.
Motivation, not diagnosis
Dayvest gives a statistical estimate to keep you going. It is not medical advice and doesn’t replace your doctor.
Your data stays yours
Your entries are stored on your device. No account needed, and we never sell or share your data.
Meet the founder
Built by user #1
“I came back to running at 51. This May I ran a 2:51 marathon, and on December 13 I race again in Mersin, Turkey. I built Dayvest to see what every day of training, sleep and rest adds — and now you can see it too.”
Sergey Shneyder, 54 — founder of Dayvest and its first user. Watch his weekly videos →
Founding Member
$99 once — lifetime access.
100 spots. Free to reserve.