# Lumina Log — On-Device Sleep Clarity

> On-Device Sleep Clarity (iPhone/iPad app by Lee Hyojoong.)

- Source: https://appshunter.io/ios/app/lumina-log/id6761148518 (this page in markdown: same URL + `.md`)
- Developer: [Lee Hyojoong](https://appshunter.io/developer/1888028738)
- Category: Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 17 · 2 MB
- Languages: English, Korean
- Released: 2026-08-21
- Data updated: 2026-09-14
- User reviews in markdown: https://appshunter.io/ios/app/lumina-log/id6761148518/reviews.md

## What is Lumina Log?

Lumina Log is a privacy-first sleep companion for people who already track sleep in Apple Health.

If you already track sleep in Apple Health, Lumina Log helps answer the next question: what did last night actually mean?

Lumina Log reads your recent sleep, heart rate, HRV, and supported overnight signals from Apple Health, then turns them into:

- a clear Today summary
- Daily Readiness
- Sleep Balance
- a nightly Timeline
- a lightweight weekly review in Trends

Why Lumina Log:

- Clearer than Apple Health alone
  Lumina Log focuses on explanation, not raw charts alone.

- On-device by default
  Your Health data stays on your device.

- No account required
  Connect Apple Health and start reviewing recent nights without account setup.

- Useful with partial data
  If HRV or stage detail is limited, Lumina still uses the most reliable available sleep data and tells you what is missing.

- Built for the morning check-in
  Widget and in-app views are designed to help you understand the night quickly.

Important:

- Lumina Log is for wellness reference and trend tracking.
- It is not a medical or diagnostic app.


## Version history (last 1 release)

### 1.0.0 — 2026-04-05

No release notes.

## More apps by Lee Hyojoong

- [PhoneClean - Smart Cleaning](https://appshunter.io/ios/app/phoneclean-smart-cleaning/id6761890029)
- [ShotCull : Screenshot Cleaner](https://appshunter.io/ios/app/shotcull-screenshot-cleaner/id6762176047)
- [LoanPlan - 대출계산기](https://appshunter.io/ios/app/loanplan/id6762421590)
- [QR Previewer](https://appshunter.io/ios/app/qr-previewer/id6762736386)
- [ReadyCam](https://appshunter.io/ios/app/readycam/id6767084805)

All apps by Lee Hyojoong: https://appshunter.io/developer/1888028738

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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 2026-09-14.*