Best caffeine tracker to improve your sleep - Caffeine Clock

# Caffeine Clock > Caffeine Clock is the most comprehensive caffeine tracking app for iOS and Android. Track your caffeine intake in real-time with scientifically-backed calculations, access a database of 200+ caffeine items, and improve your sleep quality by making informed decisions about your caffeine consumption. Completely free with optional ad removal. Caffeine Clock helps users know exactly how much caffeine they have in their system at any given moment. Using scientifically-backed pharmacokinetic models based on caffeine's half-life of approximately 5 hours, the app provides accurate real-time tracking of caffeine levels throughout the day. ## Key Features - **Real-Time Caffeine Tracking**: Track your exact caffeine levels at any time using scientifically-backed half-life calculations (5-hour half-life with customizable absorption rates) - **Comprehensive Database**: Access over 200+ pre-loaded caffeine items including coffee from major chains (Starbucks, Costa, etc.), energy drinks (Red Bull, Monster, etc.), teas, sodas, and more - **Custom Items**: Create custom caffeine items with your own images if something isn't in the database - **Analytics Dashboard**: View detailed analytics and consumption history with graphs and insights into your caffeine habits - **Privacy-First**: No account required, all data stored locally on your device, completely offline functionality with no server communication - **Multi-Language Support**: Available in English, Czech, German, French, and Spanish - **Sleep Improvement**: Make informed decisions about caffeine timing to optimize sleep quality - **Educational Content**: Built-in knowledge base with articles about caffeine effects, coffee beans, origins, and health impacts ## Use Cases Caffeine Clock is ideal for: - Coffee enthusiasts who want to track their daily intake - People with sleep issues caused by late caffeine consumption - Energy drink consumers managing their consumption - Health-conscious individuals mon