---
title: "NightOwl Companion - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "This app allows you to interact with the NightOwl sensor that measures signals from your index finger with a small light sensor to check if you have sleep-related breathing disorders.    You can set u"
---

# NightOwl Companion — United States
> The NightOwl companion app

![NightOwl Companion App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/a4/a9/6b/a4a96b4f-2ffd-62d9-a062-58483311eaa8/AppIcon-0-0-1x_U007epad-0-1-85-220.png/400x400bb.png)

**Developer:** [Ectosense](https://apptail.io/developer/ectosense-FJbc)
**Category:** Medical
**Rating:** 4.8/5 (82,555 ratings)
**Price:** Free
**Bundle ID:** com.ectosense.NightOwl
**Store:** Apple App Store
**Country:** United States
**Version:** 6.1.0 (released 2026-02-11)
**Original Release:** 2018-07-30

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1397382074)
**AppTail Page:** [https://apptail.io/app/nightowl-companion-Nbp/united-states](https://apptail.io/app/nightowl-companion-Nbp/united-states)

## NightOwl Companion Description
This app allows you to interact with the NightOwl sensor that measures signals from your index finger with a small light sensor to check if you have sleep-related breathing disorders.  

You can set up the test in a few minutes using the in-app instructional videos. Wear the sensor for the prescribed number of nights to complete the test. 

Disclaimer: This app may provide information from external medical devices. Before making any medical decisions based on this information, read the device instructions carefully and speak with your healthcare provider.

## NightOwl Companion Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c6/ea/1a/c6ea1aad-d557-0294-7f85-4d3599ef5580/ios_1.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/2f/67/be/2f67be4f-0e62-c986-0a32-baa4e6ec7693/ios_2.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f0/47/6f/f0476fc9-b4bb-4091-1403-62a6b24e2121/ios_3.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/a5/46/b4/a546b459-fa4f-f54e-bd56-5e71f939ef1b/ios_4.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ab/37/75/ab377508-050a-91dc-d0a4-767022a47edf/ios_5.png/1242x2688.png)

## NightOwl Companion Rating Breakdown in United States
- 5 stars: 68,703 (83%)
- 4 stars: 10,819 (13%)
- 3 stars: 2,491 (3%)
- 2 stars: 246 (0%)
- 1 stars: 296 (0%)

## NightOwl Companion Reviews in United States

### ***** "WOW"
This is the best , most comfortable way to take this kind of test. So easy to follow the directions. I recommend this company to anyone.
-- Its my lucky day 2019, 2025-01-04

### ***** "Night owl"
Easy peasy!!
-- donf2528, 2025-01-04

### ***** "Easy"
Wow this was the easiest medical test I ever had.
-- Ranchguy36, 2025-01-01

### ***-- "NightOwl Asleep"
The app did not always respond right away.  Got several error messages and had to keep trying and then had to turn off the phone.  The device is simple and not uncomfortable.  Much better than getting wired at a sleep study lab in an unfamiliar and possibly uncomfortable room.
-- SAKAXY, 2024-12-31

### ***** "Easy"
Download of the iPhone app and setup on the sensor was very easy. 

Sensor was comfortable to wear and did not interfere with sleep.
-- High Desert Miner, 2024-12-30

### ***** "Excellent instructions"
Easy to set up and use. Thorough and complete step by step guide makes it almost foolproof.
Very comfortable and unobtrusive sensor.
-- Art from Duke, 2024-12-27

### *---- "Junk"
Garbage 

The app would not load up . I called the help line and of course you talk to somebody that is not in the USA . I waited two weeks to get the product and they wanted to send me another unit .
-- beicysmf, 2024-12-27

### ***** "Another drunken Seabee"
I’ve had a few sleep tests in my life but this is least demanding. Well done Night Owl.
Tomorrow night I’m bringing my tablet to bed with my ear buds so I can music my way back to sleep when insomnia hits.
-- Drunken seabee, 2024-12-24

### ***** "Awesome"
It was so simple to do, and the directions were very thorough and easy to understand
-- Milton Delaware, 2024-12-24

### ***** "Big improvement over traditional testing"
Before you had to go to a sleep clinic and get wired up with electrodes and sleep all night. This is much more convenient as I’m able to do it from home. No wires. No electrodes all over your body. Just wrap a sensor on top of your finger and go to sleep. Big improvement
-- John’s a lawyer, 2024-12-17

[View all NightOwl Companion reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## NightOwl Companion Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | United States | Medical | #72 |

## NightOwl Companion Discovered Keywords
- nightowl companion

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## NightOwl Companion Available In
- [United States](https://apptail.io/app/nightowl-companion-Nbp/united-states)
- [New Zealand](https://apptail.io/app/nightowl-companion-Nbp/new-zealand)
- [Netherlands](https://apptail.io/app/nightowl-companion-Nbp/netherlands)
- [Australia](https://apptail.io/app/nightowl-companion-Nbp/australia)
- [India](https://apptail.io/app/nightowl-companion-Nbp/india)
- [Canada](https://apptail.io/app/nightowl-companion-Nbp/canada)
- [United Kingdom](https://apptail.io/app/nightowl-companion-Nbp/united-kingdom)
- [Ireland](https://apptail.io/app/nightowl-companion-Nbp/ireland)
- [Jamaica](https://apptail.io/app/nightowl-companion-Nbp/jamaica)
- [Japan](https://apptail.io/app/nightowl-companion-Nbp/japan)
- [Germany](https://apptail.io/app/nightowl-companion-Nbp/germany)
- [Belgium](https://apptail.io/app/nightowl-companion-Nbp/belgium)
- [Singapore](https://apptail.io/app/nightowl-companion-Nbp/singapore)
- [Mexico](https://apptail.io/app/nightowl-companion-Nbp/mexico)
- [Spain](https://apptail.io/app/nightowl-companion-Nbp/spain)
- [Hong Kong SAR China](https://apptail.io/app/nightowl-companion-Nbp/hong-kong)
- [Philippines](https://apptail.io/app/nightowl-companion-Nbp/philippines)
- [Denmark](https://apptail.io/app/nightowl-companion-Nbp/denmark)
- [Panama](https://apptail.io/app/nightowl-companion-Nbp/panama)
- [Switzerland](https://apptail.io/app/nightowl-companion-Nbp/switzerland)
- [Dominican Republic](https://apptail.io/app/nightowl-companion-Nbp/dominican-republic)
- [Vietnam](https://apptail.io/app/nightowl-companion-Nbp/vietnam)
- [South Africa](https://apptail.io/app/nightowl-companion-Nbp/south-africa)
- [France](https://apptail.io/app/nightowl-companion-Nbp/france)
- [China](https://apptail.io/app/nightowl-companion-Nbp/china)
- [Thailand](https://apptail.io/app/nightowl-companion-Nbp/thailand)
- [Armenia](https://apptail.io/app/nightowl-companion-Nbp/armenia)
- [Azerbaijan](https://apptail.io/app/nightowl-companion-Nbp/azerbaijan)
- [Algeria](https://apptail.io/app/nightowl-companion-Nbp/algeria)
- [Egypt](https://apptail.io/app/nightowl-companion-Nbp/egypt)
- [Cayman Islands](https://apptail.io/app/nightowl-companion-Nbp/cayman-islands)
- [Lebanon](https://apptail.io/app/nightowl-companion-Nbp/lebanon)
- [Portugal](https://apptail.io/app/nightowl-companion-Nbp/portugal)
- [Russia](https://apptail.io/app/nightowl-companion-Nbp/russia)
- [Grenada](https://apptail.io/app/nightowl-companion-Nbp/grenada)
- [Finland](https://apptail.io/app/nightowl-companion-Nbp/finland)
- [Italy](https://apptail.io/app/nightowl-companion-Nbp/italy)
- [Estonia](https://apptail.io/app/nightowl-companion-Nbp/estonia)
- [Brazil](https://apptail.io/app/nightowl-companion-Nbp/brazil)
- [Suriname](https://apptail.io/app/nightowl-companion-Nbp/suriname)
- [Brunei](https://apptail.io/app/nightowl-companion-Nbp/brunei)
- [Türkiye](https://apptail.io/app/nightowl-companion-Nbp/turkey)
- [Taiwan](https://apptail.io/app/nightowl-companion-Nbp/taiwan)
- [Hungary](https://apptail.io/app/nightowl-companion-Nbp/hungary)
- [Indonesia](https://apptail.io/app/nightowl-companion-Nbp/indonesia)
- [Israel](https://apptail.io/app/nightowl-companion-Nbp/israel)
- [Ecuador](https://apptail.io/app/nightowl-companion-Nbp/ecuador)
- [South Korea](https://apptail.io/app/nightowl-companion-Nbp/south-korea)
- [Kuwait](https://apptail.io/app/nightowl-companion-Nbp/kuwait)
- [Kazakhstan](https://apptail.io/app/nightowl-companion-Nbp/kazakhstan)
- [Uzbekistan](https://apptail.io/app/nightowl-companion-Nbp/uzbekistan)
- [Latvia](https://apptail.io/app/nightowl-companion-Nbp/latvia)
- [Czechia](https://apptail.io/app/nightowl-companion-Nbp/czechia)
- [Malaysia](https://apptail.io/app/nightowl-companion-Nbp/malaysia)
- [Nigeria](https://apptail.io/app/nightowl-companion-Nbp/nigeria)
- [Colombia](https://apptail.io/app/nightowl-companion-Nbp/colombia)
- [Norway](https://apptail.io/app/nightowl-companion-Nbp/norway)
- [Chile](https://apptail.io/app/nightowl-companion-Nbp/chile)
- [Belarus](https://apptail.io/app/nightowl-companion-Nbp/belarus)
- [Pakistan](https://apptail.io/app/nightowl-companion-Nbp/pakistan)
- [Poland](https://apptail.io/app/nightowl-companion-Nbp/poland)
- [Austria](https://apptail.io/app/nightowl-companion-Nbp/austria)
- [Romania](https://apptail.io/app/nightowl-companion-Nbp/romania)
- [Argentina](https://apptail.io/app/nightowl-companion-Nbp/argentina)
- [Sweden](https://apptail.io/app/nightowl-companion-Nbp/sweden)
- [Jordan](https://apptail.io/app/nightowl-companion-Nbp/jordan)
- [North Macedonia](https://apptail.io/app/nightowl-companion-Nbp/north-macedonia)
- [Nepal](https://apptail.io/app/nightowl-companion-Nbp/nepal)
- [Senegal](https://apptail.io/app/nightowl-companion-Nbp/senegal)
- [Bermuda](https://apptail.io/app/nightowl-companion-Nbp/bermuda)
- [Belize](https://apptail.io/app/nightowl-companion-Nbp/belize)
- [Tunisia](https://apptail.io/app/nightowl-companion-Nbp/tunisia)
- [Guyana](https://apptail.io/app/nightowl-companion-Nbp/guyana)

---

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