Most age calculator apps stop at years, months, and days. LifeSpan goes further — hours alive, birth weekday, life progress, milestone timeline, and a live birthday countdown. Fast, shareable, zero bloat. One URL per birth date. No accounts, no tracking. Be responsible for your life!

Age Timer is a lightweight web app that lets users input their birthdate and track their age in real-time with a continuously running timer. It offers an intuitive interface to monitor your age down to the second. This responsive Progressive Web App (PWA) is perfect for anyone curious about their exact age or exploring creative web development.