# Night Ledger — A private sleep diary

> Private iPhone sleep diary for tracking and understanding sleep patterns. (iPhone/iPad app by Auster Chen.)

- Source: https://appshunter.io/ios/app/night-ledger/id6803367661 (this page in markdown: same URL + `.md`)
- Developer: [Auster Chen](https://appshunter.io/developer/1875774145)
- Category: Health & Fitness
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings
- Age rating: 12+
- Requires: iOS 18.0 · 2 MB
- Languages: American English
- Released: 2026-08-27
- Data updated: 2026-09-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/night-ledger/id6803367661/reviews.md

## What is Night Ledger?

Night Ledger is a personal sleep diary for iPhone, built hand in hand with a sleep medicine clinician to help people understand their sleep patterns to sleep better.

Log last night’s sleep in the morning, keep a personal history, and export a report when you want to share it with your clinician, therapist, or care team.

Everything stays on your device. There is no account, no iCloud sync, no analytics, and nothing is uploaded.

You can save a complete morning log, keep a draft, skip a day, or edit later. Trends cover 14, 28, and 90 days. Exports include PDF, CSV, and JSON. Reminders are local.

Night Ledger was designed with real clinical sleep diary workflows in mind, including insomnia care, CBT-I support, and sleep efficiency tracking.

Night Ledger does not diagnose, treat, prescribe, or recommend. It does not give medication guidance. It is a private tracking tool to help you organize your sleep information and review it with a qualified clinician when appropriate.

## Key features

- Log sleep patterns
- Personal sleep history
- Exportable reports (PDF, CSV, JSON)
- Trend analysis (14, 28, 90 days)
- Local reminders
- Designed for clinical workflows


## Frequently asked questions about Night Ledger

### What is Night Ledger?

Night Ledger is a private sleep diary designed for iPhone to help users understand their sleep patterns. It allows you to log sleep, track trends, and export reports for sharing with healthcare providers.

### Is Night Ledger free to use?

Yes, Night Ledger is completely free to download and use. There are no in-app purchases or subscription fees associated with its core functionality.

### Does Night Ledger have ads?

No, Night Ledger is ad-free. The app is designed to provide a private and uninterrupted experience for users tracking their sleep.

### What devices does Night Ledger support?

Night Ledger is currently available for iPhone. It is designed to work on iOS devices.

### How does Night Ledger ensure privacy?

All data logged in Night Ledger stays on your device. There is no account creation, iCloud sync, or data uploaded to external servers, ensuring maximum privacy.

### Can I share my sleep data with my doctor using Night Ledger?

Yes, Night Ledger allows you to export your sleep data in PDF, CSV, and JSON formats. This makes it easy to share comprehensive reports with your clinician, therapist, or care team.

### How often is Night Ledger updated?

The latest version of Night Ledger is 1.0.3, last updated on September 21, 2026. Updates are released to improve functionality and reliability.

### What age rating does Night Ledger have?

Night Ledger has an age rating of 12+. This indicates it is suitable for users aged 12 and older.

## Version history (last 3 releases)

### 1.0.3 — 2026-09-21

Ribbon taps open the time adjustment sheet again, so you can drag marks to set times.

### 1.0.1 — 2026-09-03

Faster ribbon taps, cleaner clinician PDF, Trends now shows average sleep efficiency plus short notes on regularity and efficiency, and reminder times are easier to set.

### 1.0 — 2026-08-27

No release notes.

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## More apps by Auster Chen

- [Takara TCG](https://appshunter.io/ios/app/takara-tcg/id6758921180)
- [Claymate Studio](https://appshunter.io/ios/app/claymate-studio/id6761700585)
- [VaultDesk TCG: Card Shops](https://appshunter.io/ios/app/vaultdesk-tcg-card-shops/id6783979479)
- [Find the Cow! Queens Puzzle](https://appshunter.io/ios/app/find-the-cow-queens-puzzle/id6784067327)
- [Hotpot Panic](https://appshunter.io/ios/app/hotpot-panic/id6787567105)

All apps by Auster Chen: https://appshunter.io/developer/1875774145

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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 2026-09-28.*