Caffeinelog

CaffeineLog helps you track your daily caffeine intake and understand how it affects your energy and sleep. Log any drink in seconds — coffee, espresso, tea, energy drinks, or create your own custom drinks. See your real-time active caffeine level calculated using scientifically-backed half-life math, so you always know exactly how much caffeine is still in your system. Features: • Real-time caffeine level gauge with color-coded safety zones • Quick-log from preset drinks or your own custom drinks • 24-hour chart showing caffeine curve throughout the day • History view with weekly breakdown • Smart cutoff alerts — know when to stop to protect your sleep • HealthKit integration — sync caffeine to Apple Health and read sleep data • Home Screen widgets for at-a-glance caffeine levels • 100% on-device — no account, no server, complete privacy Upgrade to PRO: • Sleep correlation insights — see how caffeine affects your sleep quality • Trend analysis across weeks and months • CSV export for your data • Unlimited custom drinks Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/