CaffeineWindow

Caffeine Window helps you understand how caffeine may affect sleep.

Log coffee, tea, energy drinks, cola, espresso, pre-workout, or a custom amount in seconds. See how much caffeine is still active now, when it will mostly clear, and whether another dose is likely to matter before bed.

Features: • Quick caffeine logging • Active caffeine estimate • Clear-by time • Bedtime-based sleep risk • Daily timeline and recent trends • Custom bedtime, wake time, and sensitivity • Optional local reminder for your caffeine cutoff

Caffeine Window is designed for awareness and planning. It does not provide medical advice.