Caffeine Curfew iOS App

Track caffeine intake, hydration, and master your sleep

Activity trackingSleep apps

Caffeine Curfew is a native iOS, iPad, and Apple Watch app that helps you track active caffeine levels in your body using real half-life modeling to protect your sleep and optimize energy. See how much caffeine is still active, predict caffeine’s impact before bedtime, log drinks fast, and monitor it all with Home Screen widgets and Apple Health integration. Stop guessing — know how caffeine affects your day and night.