# OxyKnight — Smart Oximeter App

> Smart oximeter app for monitoring sleep and spot-checking oxygen saturation. (iPhone/iPad app by CMI Health Inc..)

- Source: https://appshunter.io/ios/app/oxyknight/id1631825159 (this page in markdown: same URL + `.md`)
- Developer: [CMI Health Inc.](https://appshunter.io/developer/1054521049)
- Category: Health & Fitness, Medical
- Price: Free
- Rating: 3.50/5 from 8 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 48 MB
- Languages: English
- Released: 2022-12-31
- Data updated: 2026-07-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/oxyknight/id1631825159/reviews.md

## What is OxyKnight?

The updated OxyKnight® App is now compatible with multiple CMI Health smart oximeters including the OxyKnight® Watch, the OxyKnight® Watch Lite, and the OxyKnight® Finger. 

The OxyKnight® Watch and Watch Lite are perfect for anyone who snores, who feels not fully rested after sleep, has sleep disorders or oxygen issues, or people who may need to be monitored during sleep. They are very comfortable to wear and operate continuously throughout the night. It’s made with a soft, flexible fingertip cup and adjustable wrist strap for simple use. Just 1 tap within the App to connect the Watch with the OxyKnight® App via Bluetooth.

The OxyKnight® Finger is a clinical-grade smart fingertip oximeter designed for home use, sports, and aviation. Check your oxygen saturation anytime, anywhere, and sync results effortlessly with the OxyKnight® App.

FEATURES (Need the compatible and designated OxyKnight® device for the specific functionality) 

- Monitors and records HRPO (High-Resolution Pulse Oximetry) overnight

- Sleep report includes SpO2 and PR trend graph, and a series of statistics. Easy to share with family members or doctors.

- Trend data for sleep quality, SpO2, and PR

- Customizable SpO2 and PR alarms

- Spot Check SpO2, PR, and Respiration Rate


Disclaimer: Please always seek a doctor’s advice before making any medical decisions.

## Key features

- Overnight HRPO monitoring
- Sleep reports with SpO2/PR trends
- Customizable SpO2/PR alarms
- Spot Check SpO2, PR, Respiration Rate
- Bluetooth device connection
- Shareable sleep data

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/oxyknight/id1631825159/reviews.md

### 5/5 — Great tool for home support

*2025-09-20*

My son has had pneumonia twice this year. This app gives me the ability to keep an eye on his oxygen level for extended periods of time to be able to catch illnesses early!! I have checked it against a traditional fingertip pulse ox and get similar results so I am confident in the reading I see.  Really a great addition to our home care capabilities!

### 2/5 — Keeps crashing and opening with white screen

*2024-12-30*

Works well when the app runs correctly.

I wish there was a way to combine results or crop results. The monitor falls off my son or the power button gets pressed at night and although we reset it, we end up with a bunch of different results because of it.

### 1/5 — OxyKnight program

*2024-11-16*

Oximeter works fine. Tried many times to activate program. When I try to start the program it tells me I already have activated the program.  When I try to log on it tells me that I have not activated the program. Even tried changing email accounts, deleting and reinstalling the program. Nothing seems to work. Tried to call the company. The person handling this issue was out. No return call.

### 5/5 — Most accurate and responsive

*2024-11-08*

Pros: 
 I can finally nap when monitoring vitals for my asthma kiddos when sick. 
 Soft, comfortable materials. 
 More accurate and responsive to changes in oxygen n heart rate than our other finger stick pulse oximeters. 
 Affordable option compared to DME. 

Cons: 
 Strap loose on my 6-yr old’s wrist. 
 Alarm will wake me if vitals go beyond parameters, even briefly. 
 App must be running for alarms to notify me. 
 No tracking, to log numbers I’ve had to take screen shots

## Frequently asked questions about OxyKnight

### What devices are compatible with OxyKnight?

OxyKnight is compatible with multiple CMI Health smart oximeters, including the OxyKnight® Watch, OxyKnight® Watch Lite, and OxyKnight® Finger. The app requires a designated OxyKnight® device for full functionality.

### What kind of data does OxyKnight track?

OxyKnight monitors and records High-Resolution Pulse Oximetry (HRPO) overnight, providing trend data for sleep quality, SpO2 (blood oxygen saturation), and PR (pulse rate). It also allows for spot checks of SpO2, PR, and respiration rate.

### Can I share my sleep data from OxyKnight?

Yes, the sleep reports generated by OxyKnight include SpO2 and PR trend graphs and statistics that are easy to share with family members or doctors.

### Does OxyKnight have customizable alarms?

Yes, OxyKnight offers customizable alarms for SpO2 and PR, allowing users to set thresholds for notifications.

### Is OxyKnight suitable for medical diagnosis?

OxyKnight is a tool for monitoring and tracking health data. However, users should always seek a doctor's advice before making any medical decisions, as the app is not a substitute for professional medical consultation.

### How often is OxyKnight updated?

The latest version of OxyKnight is 2.4.2, which was last updated on April 4, 2025. Updates typically address compatibility, performance, and feature enhancements.

### What is the age rating for OxyKnight?

OxyKnight has an age rating of 4+, making it suitable for a wide range of users.

### What platforms does OxyKnight support?

OxyKnight is currently supported on iPhone and iPod devices.

## Version history (last 5 releases)

### 2.4.2 — 2025-04-04

Add notification indicator

### 2.4.1 — 2025-04-01

Fix datepicker freezing issue

### 2.4 — 2025-03-25

- Added a maintenance screen and smart update prompts to keep you informed and always up-to-date with the latest features and improvements.

### 2.3.1 — 2025-03-11

- Update record list screen ui

### 2.3.0 — 2025-01-22

- Prevent crash navigating between screens

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## More apps by CMI Health Inc.

- [SpiroLink](https://appshunter.io/ios/app/spirolink/id1507922795)
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- [AsthmaGo](https://appshunter.io/ios/app/asthmago/id1576739743)
- [Spirolink Health](https://appshunter.io/ios/app/spirolink-health/id1613133129)

All apps by CMI Health Inc.: https://appshunter.io/developer/1054521049

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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 2026-07-05.*