Most people know roughly how long they might live. Almost nobody knows how many of those years are likely to be healthy ones — and that second number is the one worth doing something about.
Good Years asks about ten things: smoking, blood pressure, movement, drink, weight, sleep and diet among them. It takes about three minutes. Then it shows you two figures side by side: how long people who answered like you live on average, and how long they typically stay in good health.
The distance between them has a name. It is years lived in less than full health, and across whole populations it runs to about a decade. Good Years shows you yours next to the ordinary figure for your country, so you can see whether it is unusual or simply normal.
It also shows what those years typically consist of, for people in your country at the age they usually come, from the World Health Organization's own figures.
WHAT YOU CAN DO ABOUT IT
Try a change and watch both numbers move. Quitting smoking, walking most days, drinking less, sleeping seven to eight hours — each one is priced in healthy years, drawn from studies that followed hundreds of thousands of people for decades. Every figure comes with the research behind it, in plain language, one tap away.
Then pick one change and work on it, a day at a time. Tick the days you kept it and the app counts the weeks. A kept week is never taken away, and there is no streak to break.
GOOD YEARS PRO
A one-off purchase, no subscription. The age you stop working is free to try; Pro shows how the changes you add move the good years that typically follow it. It also adds the full playground where changes combine, a band-by-band look at where your own answers sit in the model, reminders for more than one change at a time, and how many of the years you and a partner are both likely to be well fall after you stop working. Pairing with a partner is free.
IT NEVER LEAVES YOUR PHONE
No account. No sign-in. No analytics, no advertising, no tracking, no third-party code that collects anything. The app makes no network requests at all, and works in airplane mode. Deleting the app deletes everything, and there is a "Delete everything" button in Settings if you would rather not wait.
A NOTE ON THE NUMBERS
Good Years is an educational wellness app. The estimates it shows are based on WHO population statistics and published long-term cohort studies — they describe averages across large groups of people and are shown as ranges, never as a prediction about any individual. Good Years does not provide medical advice, diagnosis, or treatment, and is not a substitute for consulting a health professional. Everything runs on your device: no account, no data collection, ever.
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