nemui

nemui is a web app that helps you smoothly transition to a new sleep schedule. Named after the Japanese words for sleep (眠nemu) and transition (移i), reading as 眠いnemui (sleepy).

Try it now • GitHub • Blog post

Features

• Interactive clock interface inspired by Apple
• Gradual sleep schedule adjustment based on sleep science
• Full Daylight Saving Time (DST) support
• Calendar (.ics) export with bedtime reminders
• Local storage for progress tracking
• Accessible: supports keyboard navigation and screen readers

Why nemui?

Unlike abrupt changes that can disrupt your circadian rhythm, nemui helps you adjust your sleep schedule gradually. It’s particularly useful for:

• Adapting to new work/study schedules
• Preparing for timezone changes
• Smoothly transitioning through DST changes
• Fixing a misaligned sleep schedule