# Zzz Guardian — Protecting Your Sleep Quality

> Protecting Your Sleep Quality (iPhone/iPad app by YIZE LIAO.)

- Source: https://appshunter.io/ios/app/zzz-guardian/id1618205152 (this page in markdown: same URL + `.md`)
- Developer: [YIZE LIAO](https://appshunter.io/developer/1511365129)
- Category: Health & Fitness, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 16.1 · 35 MB
- Languages: English, Chinese
- Released: 2024-08-26
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/zzz-guardian/id1618205152/reviews.md

## What is Zzz Guardian?

The Sleep Guardian is a  wearable device approved by the ministry of health and welfare of Health for real-time measurement of vital signs. This app can connect to a Wrist-100 pulse oximeter and blood oxygen saturation meter from North-vision Tech. Inc. and Taiwan Aulisa Medical Devices Technologies, Inc, a physiological signal monitoring system GA1000 Lite and a TempPal body temperature patch from iWEECARE Co., Ltd. The measurements include heart rate, blood oxygen saturation, breathing, and body temperature.

Patent： This app's sleep assessment method and its operating device are protected by Taiwanese Invention Patent No. I781834.

Disclaimer：This app is not intended to replace medical advice, diagnosis, or treatment. If you have any medical conditions or questions about treatment, be sure to consult with your doctor or other qualified healthcare professionals for advice.

Development Team：

-Principal investigator
Albert Chih-Chieh Yang,M.D.,Ph.D.
-MIS
Zong-Huei LIN,Ph.D.
-AI server and backend
Yi-Cing Chen(PG)
-iOS programming
Yi-Ze Liao(PG)

National Yang Ming Chiao Tung University
Digital Medicine Center


## Version history (last 5 releases)

### 1.2.7 — 2024-08-26

some bug fixed

### 1.2.6 — 2024-05-30

- some bug fixed

### 1.2.5 — 2024-04-07

- bug fixed

### 1.2.4 — 2024-04-06

- Support  the Wrist-100 device models (PC-xxB)
- Fix some bugs

### 1.2.3 — 2024-01-02

- update log's label

## Apps similar to Zzz Guardian

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Aulisa Lite GA2000](https://appshunter.io/ios/app/aulisa-lite-ga2000/id1563689739) | 5.0 (1) | Free | Health & Fitness |
| [Huijia Care](https://appshunter.io/ios/app/huijia-care/id1249165555) | — | Free | Health & Fitness |
| [Aulisa Gateway](https://appshunter.io/ios/app/aulisa-gateway/id1609015435) | 5.0 (1) | Free | Health & Fitness |
| [Aulisa Lite GA1000](https://appshunter.io/ios/app/aulisa-lite-ga1000/id1537548297) | 5.0 (3) | Free | Health & Fitness |
| [Aulisa View GA1000](https://appshunter.io/ios/app/aulisa-view-ga1000/id1468045898) | — | Free | Health & Fitness |
| [AI智能枕](https://appshunter.io/ios/app/ai/id6475710020) | — | Free | Health & Fitness |

## More apps by YIZE LIAO

- [AIMIC - Audio Recorder](https://appshunter.io/ios/app/aimic-audio-recorder/id1511367853)
- [我OK送給你](https://appshunter.io/ios/app/ok/id1555100584)
- [OffChat - No WiFi Talk Offline](https://appshunter.io/ios/app/offchat-no-wifi-talk-offline/id1563632813)
- [TempTracker - Fever Monitor](https://appshunter.io/ios/app/temptracker-fever-monitor/id1567797407)
- [MedRemind - Pill Reminder](https://appshunter.io/ios/app/medremind-pill-reminder/id1615675324)

All apps by YIZE LIAO: https://appshunter.io/developer/1511365129

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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 2026-05-19.*