1. Home
  2. 🏥 Medical
  3. NightOwl Companion
NightOwl Companion

NightOwl Companion

The NightOwl companion app

57K ratings
425 reviews
#83 in free Medical
🏥 Medical
Free

Details

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

Developer

Ectosense BVBA
✨Promote your app ✨
NightOwl Companion screenshot #1 for iPhone
NightOwl Companion screenshot #2 for iPhone
NightOwl Companion screenshot #3 for iPhone
NightOwl Companion screenshot #4 for iPhone
NightOwl Companion screenshot #5 for iPhone
iphone
ipad
📉no. 83
Charts↘︎
📌Ready
Reviews summary↘︎
⭐425
Reviews↘︎
📝28+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 1 month
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

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
Show original description

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

📉 83-6

Medical

This app dropped -6 positions in Medical chart.

Last updated on August 11, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Clever Solution

I have participated in three prior sleep tests. With the use of some clever technology we now have an effective, simple to use, in home testing system, to confirm sleep apnea. Congratulations to the smart entrepreneurs that invented and developed this excellent system.
5678 Sleepy5678 Sleepy

Great Experience

Night Owl arrived in a timely manner and was easily utilized. I would recommend it to everyone!
MechardMechard

Good Night With Night Owl

Very easy to use and not complicated at all. Slept good with it.
NikkiBJaxxNikkiBJaxx

Sleep at home

Glad this is a home test. Convenient.
Slim wanna beSlim wanna be

Buggy

I kept getting a pop up saying Error - Sorry there was an error! The app lost my personal details. I had to choose my DOB 1 day in advance to get the right date to show in my personal details. I couldn’t start the recording because of the error. I deleted the app and downloaded it again and was then able to get my details in and record my sleep. It wasted an hour of my evening.
Show more
Sup3rUnhappySup3rUnhappy
See 420 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.