Decaffed
App Store Description
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
Optional iCloud sync for your intake history
Optional export of anonymized canonical JSONL events
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.