Zest - Longevity

Zest is an app that uses AI to build personalized longevity protocols and deliver accurate biological age testing, so you can see how your body is really aging and what to do about it.

It combines at-home blood testing with supplement guidance to offer a complete end-to-end solution for longevity, covering everything from measurement to action in one place.

The app tracks the key pillars of longevity, including mood, sleep, exercise, sunlight exposure, cold immersion, fasting, supplements, and blood tests. Each day you get recommended goals, and your progress is distilled into a single longevity score that shows how your habits translate into healthier aging.

By addressing the biological root causes of aging rather than just the symptoms, Zest aims to help you feel great at every stage of life.