HITSUJI

HITSUJI is a sleep app that helps you log, understand, and reflect on your sleep so you can find a daily rhythm that works for you.

Main features

• Chronotype assessment: Understand your natural sleep tendency and find a realistic bedtime and wake-up rhythm.
• Simple sleep logging: Record your bedtime, wake-up time, and sleep quality without complicated steps.
• Sleep debt and Social Jetlag (SJL) analysis: Automatically calculate useful indicators for understanding your sleep rhythm.
• Charts and sleep score: Review daily, weekly, and monthly changes and see your progress clearly.
• AI advice: Get clear suggestions for sleep concerns and one next step based on your recorded sleep data.

One-time purchase. No ads.

HITSUJI is a paid app with no ads. Core features—including sleep logging, analysis, charts, body-clock insights, and history—remain available without additional purchases. There are no subscriptions.

About AI features

AI chat is available up to 30 times per month, AI sleep reports up to 5 times per month, and the Home suggestion once per day. AI features are online services and require an internet connection. Their availability and specifications may change or end, while core features such as sleep logging and analysis remain available.

Privacy

Lifestyle information is sent as a minimal summary for AI advice only after you consent to AI data use.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/