Project Description:

Sleep King is a data-driven sleep improvement app designed to help users build sustainable sleep habits. Unlike traditional sleep trackers that only display data, Sleep King transforms daily inputs—such as sleep duration, caffeine intake, exercise, and perceived fatigue—into clear, actionable guidance. By combining behavioral sleep principles (including CBTI) with personalized analytics, the app generates a Sleep Readiness score that helps users decide when to sleep, adjust routines, or delay bedtime.

The app also features a comprehensive Progress module, which visualizes trends in sleep quality, duration, stress, and key metrics like Sleep Performance Index (SPI) and Arousal Load Index (ALI). Structured feedback and reward mechanisms further motivate users to stay consistent over time.

By integrating data, guidance, and behavioral reinforcement into one system, Sleep King goes beyond tracking to act as a “sleep tutor,” helping users understand their patterns and achieve long-term sleep improvement.

Project Photo:

Sleep King home interface showcasing personalized bedtime recommendations, sleep performance tracking, and daily habit progress to support consistent sleep improvement.