Decaffed

Decaffed helps you understand how caffeine moves through your day so you can make better timing decisions for focus, energy, and sleep. Log each drink in seconds, see your estimated caffeine level in real time, and review your daily timeline from wake to sleep. Decaffed uses a simple, adjustable caffeine model and clear visuals so trends are easy to spot. Features • Fast drink logging with popular drink types and editable times • Real-time caffeine clearance curve based on your logged intake • Colour palette dynamically shows the current caffeine level • Daily timeline view with wake, drinks, and planned sleep markers • Custom drinks with your own serving sizes and caffeine amounts • Sleep threshold setting to visualize when you may be below your target level • Optional reminders to help you log intake consistently • iCloud sync for your intake history • JSONL Export of all data Health integration • Optionally reads Apple Health sleep data to compare caffeine timing with sleep/wake patterns • You control permissions and can use Decaffed without Health access Privacy Your data stays under your control. Health and notification access are optional.