AlcoCheck is a health & safety mobile app that helps users estimate and monitor their Blood Alcohol Content (BAC) in real-time after drinking. Designed for responsible drinking, the app provides smart recommendations, risk indicators, and personalized insights to help users stay within safe limits. The client wanted a clean, medical-grade look but still approachable for casual users. I focused on designing a simple and trustworthy interface that blends health tech accuracy with ease of use— ideal for people at social events or concerned about safe driving.