# HITSUJI — Body Clock management app

> Body Clock management app (iPhone/iPad app by Sho Sawamura.)

- Source: https://appshunter.io/ios/app/hitsuji/id6661027528 (this page in markdown: same URL + `.md`)
- Developer: [Sho Sawamura](https://appshunter.io/developer/1764710944)
- Category: Health & Fitness, Lifestyle
- Price: $2.99 with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 5 MB
- Languages: American English, Japanese
- Released: 2024-10-08
- Data updated: 2026-08-04
- User reviews in markdown: https://appshunter.io/ios/app/hitsuji/id6661027528/reviews.md

## What is 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/

## Pricing and in-app purchases

Base price: $2.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Plan | $1.99 | per month |



## Version history (last 5 releases)

### 2.9 — 2026-07-25

AI-powered features will end on August 1, 2026. Your saved and locally stored data will remain available.

### 2.8 — 2026-07-13

Refreshed as a one-time purchase app.

Ads and subscriptions have been removed. Core features—including sleep logging, analysis, charts, body-clock insights, and history—remain available without additional purchases.

AI features are online services with usage limits: 30 chats and 5 reports per month, plus one daily Home suggestion.

### 2.7 — 2026-07-06

Improved sleep score presentation, the Home screen, and widgets.
It is now easier to review your daily sleep status at a glance.

### 2.6 — 2026-07-04

Fixed minor issues and improved stability.
Improved the response quality of AI sleep advice.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

### 2.5 — 2026-06-29

Improved AI-powered sleep guidance.
The sleep consultation chat can now respond using your recorded sleep data  
Sleep score explanations are now more specific, showing which factors contributed to the score  
Added a short daily sleep improvement suggestion on the home screen  
Improved stability and response quality for AI features  
Removed image-based sleep input to match the current AI setup


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

## Apps similar to HITSUJI

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Somni Pure Sleep](https://appshunter.io/ios/app/somni-pure-sleep/id6757618747) | — | Free | Health & Fitness |
| [Lucid: Sleep Tracker & Sounds](https://appshunter.io/ios/app/lucid-sleep-tracker-and-sounds/id6754710643) | 5.0 (3) | Free | Health & Fitness |
| [Health Notes - Fresh Start](https://appshunter.io/ios/app/health-notes-fresh-start/id1534513553) | 5.0 (5) | $5.99 | Health & Fitness |
| [IgniteFit Training Hub](https://appshunter.io/ios/app/ignitefit-training-hub/id1542438959) | 5.0 (1) | Free | Health & Fitness |
| [ResiEMDR](https://appshunter.io/ios/app/resiemdr/id1615291169) | — | Free | Health & Fitness |
| [Somni: Sleep AI](https://appshunter.io/ios/app/somni-sleep-ai/id6757822455) | 5.0 (2) | Free | Health & Fitness |

## More apps by Sho Sawamura

- [Focus Up!!](https://appshunter.io/ios/app/focus-up/id6746042856)
- [PetaKey](https://appshunter.io/ios/app/petakey/id6757783818)
- [PortAI](https://appshunter.io/ios/app/portai/id6758883530)
- [StepMonster](https://appshunter.io/ios/app/stepmonster/id6759210904)
- [SubSmart](https://appshunter.io/ios/app/subsmart/id6759275602)

All apps by Sho Sawamura: https://appshunter.io/developer/1764710944

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-04.*