Jjan: Alcohol & Drink Tracker

The same two drinks hit two people differently. Jjan is a friend who understands your body and looks out for your health. While you drink, it shows how tipsy you are — based on your own body — as one simple color: green, yellow, or red. The next morning it takes care of your hangover, and week after week it keeps an eye on your rhythm. The more you use it, the better it gets to know you. ■ One tap, that's it A shot, a pint, a glass of wine — log it the way you already drink, with a single tap. It works from the Lock Screen too, so your phone can stay in your pocket. ■ A personalized engine built on 16 medical studies It starts with your sex, age, height and weight, then factors in how fast each type of drink is absorbed, and the gaps between glasses. The numbers come straight from the research — the Watson (1980) body-water formula, the Seidl (2000) regression for how alcohol…