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NightOwl Companion

NightOwl Companion

The NightOwl companion app

57K ratings
407 reviews
#77 in free Medical
🏥 Medical
Free

Details

  • Released
  • Updated
  • July 30, 2018
  • February 11, 2026

Developer

Ectosense BVBA
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📉no. 77
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⭐407
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About

Monitor your sleep for breathing disorders using a finger sensor. The app guides you through setup and data collection over several nights. Consult your healthcare provider for medical decisions.

✓Sleep breathing disorder detection
✓Index finger sensor interaction
✓In-app instructional videos
✓Multi-night data collection
✓Medical device information display
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What users say

Summarized from real user reviews of NightOwl Companion. Based on 57K reviews and a 4.8/5 average, it highlights the 5 positives and 5 negatives reviewers mention most about this Medical app.

Positive things

  • 👍Easy to use
  • 🚀Convenient home testing
  • 🚀Comfortable device
  • 🚀Improved over traditional testing
  • 🚀Unobtrusive during sleep

Negative things

  • 🐛Connectivity issues
  • 🐛Unreliable data upload
  • 🐛Unclear instructions
  • 🔋Interference with CPAP use
  • 🔋Numbness in finger from device
See all reviews

What's New in NightOwl Companion

6.1.0

February 11, 2026

Performance improvements and bug fixes for a smoother, more reliable app experience.

Charts

Top Free

📉 77-12

Medical

This app dropped -12 positions in Medical chart.

Last updated on July 22, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Night Owl

I enjoy the ease of using the monitor once I was able to get the blue tooth connection working. My husband had done a sleep study before this is far down the easiest to use. Didn’t know I was doing a sleep apnea test because it was like it wasn’t there. Thank you for letting me be home to do this.
you dont want this commentyou dont want this comment

A really good device

I appreciate this tool, very easy, comfortable & makes me feel relaxed. I recommend it keep being used.
2Bgreat2Bgreat

Test

It was not as bad as I thought it would be. Thanks
GpaMylerGpaMyler

So easy

The instructions were easy to follow and the sensor stayed on through lots of tossing and turning.
Dutchmom3boyDutchmom3boy

Sleep

I gave it four stars because I have anxiety over test taking. I liked the test!
Laurie sleepLaurie sleep
See 402 more reviews

User experience

🐞

Reported Bugs

4 issues

Repeated error codes with sensor

Bug

App crashes during setup

Bug

Inability to input or scan codes

Bug

Unsuccessful data uploads

Bug
✨

Requested Features

4 requests

Dark mode option

Feature

Instant access to test results

Feature

Compatibility with left-handed users

Feature

In-app guidance for seniors

Feature

FAQ

What does the NightOwl Companion app do?

This app works with the NightOwl sensor to measure signals from your index finger, helping to identify potential sleep-related breathing disorders. It guides you through the testing process and collects data over multiple nights.

How do I set up the test?

Setting up the test is simple and takes only a few minutes. The app provides instructional videos to guide you through the process of preparing and using the sensor.

Is this app free to use?

Based on the provided information, the app is free to use. There are no mentions of in-app purchases or subscription fees associated with its core functionality.

What should I do with the medical information provided by the app?

The app may provide information from external medical devices. It is crucial to read the device instructions carefully and speak with your healthcare provider before making any medical decisions based on this information.

Who is the target audience for this app?

This app is designed for individuals who are experiencing or are concerned about sleep-related breathing disorders. It is intended for use by those who are utilizing or considering the NightOwl sensor for monitoring.