Yorusan - 3-Line Sleep Diary
60-sec diary, AI weekly recap
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Can't keep a diary? Write just 3 lines before bed — worst thing, best thing, tomorrow's goal. Weekly reports pair them with your sleep & heart data, all on your device.
■ 60 seconds before bed. Just 3 lines.
Yorusan (Japanese for "night + three") is the smallest journal you'll ever keep — built for people who never manage to keep one.
Every night, write exactly three lines:
1. The worst thing about today
2. The best thing about today
3. Tomorrow's goal
Vent the bad, end on the good, look ahead. This simple order — popularized by the Japanese bestseller "The 3-Line Diary" — clears your head so you fall asleep lighter.
■ Weekly and monthly reports (free, built on your device)
Your three lines quietly add up. Yorusan turns them into weekly and monthly reports:
- A summary of the period and your mood trend
- Your body's rhythm, seen through sleep and heart data
- Streaks and entry counts at a glance
Every report is built entirely on your iPhone — nothing is uploaded anywhere. Every feature is free, with no limits.
■ Never stare at a blank page
Pull today's photos, places, and workouts straight into your entry with iOS Journaling Suggestions (iOS 17.2+). On iOS 18+, your logged State of Mind pre-fills today's mood.
■ Health, read-only
Connect Apple Health (sleep duration, resting heart rate, HRV) to make reports richer, plus a daily "rhythm score" at a glance.
- Read-only: Yorusan never writes to Health
- Not a medical device: no diagnosis, ever
■ Built to stick
- One entry a day, three lines, nothing more
- Streak counter
- A gentle bedtime reminder
- 14-day mood chart
■ Privacy first
- Everything stays on your device — there is no developer server
- Your diary text and Health data are never used for advertising
- Your diary text and Health data never leave your iPhone
■ Pricing and ads
- Every feature is free. There is no subscription
- A banner ad appears only at the bottom of the History and Reports tabs — never on the writing screen, the edit screen, or Settings
- A one-time "Remove Ads" purchase (¥100) turns ads off for good. No auto-renewal
- If you ever bought the old "Yorusan Premium" subscription, your purchase history is detected automatically and ads stay off permanently — feel free to cancel the subscription
Start tonight. Three lines is all it takes.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://honki.ai/yorusan/privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 丽佳 施, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 丽佳 施
- Size
- 4.8 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Simplified Chinese
- Age Rating
9+
- 9+
- Contains
Advertising
Health or Wellness Topics
- In-App Purchases
Yes
- Remove Ads $0.99
- Copyright
- © 2026 Jayden Chen