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Android Apps > Medical > NightOwl Companion
NightOwl Companion icon

NightOwl Companion

4.2.0
Resmed
4.75
25,952 reviews
100,000+
Downloads
Free

The NightOwl Companion app allows you to interact with the NightOwl sensor.

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NightOwl Companion Screenshot 6 of 6
Screenshots by Resmed, from the Google Play listing
View on Google Play

Summary

NightOwl Companion connects with the NightOwl sensor to evaluate sleep-related breathing and enable at-home testing for sleep disorders. It holds a US MEDICAL ranking of #68 and a strong rating from 25,952 users at 4.75, with 100,000+ total downloads and 8K downloads in the last 30 days.

Pros & Cons

  • Strong user rating from thousands of reviews
  • Free to use, lowering entry barriers
  • Direct integration with the NightOwl sensor
  • In-app instructional videos streamline setup
  • Long-standing app availability (3052 days old)
  • External device data support
  • Dependent on NightOwl hardware for data collection
  • Medical context may limit appeal to non-patients or non-caregivers
  • Broad permission requirements typical for device-peripheral apps

About NightOwl Companion

NightOwl Companion is a medical app developed by Resmed.

How many times has NightOwl Companion been installed?

NightOwl Companion has been installed 370 thousand times. In the last 30 days, the app was installed 8 thousand times. It is ranked in the top 100 medical apps.

What is the rating of NightOwl Companion?

NightOwl Companion is rated 4.75 out of 5 stars, based on 26 thousand ratings.

Is NightOwl Companion free?

NightOwl Companion is free. The app size is 19.16 MB. The latest version available is 4.2.0. The last update was on February 6, 2026.

What are the requirements for NightOwl Companion?

NightOwl Companion requires Android 9.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since June 2018.

NightOwl Companion is made and published by Resmed. AppBrain is an independent app data site and isn't affiliated with Resmed. The app name, icon, screenshots and description belong to Resmed and are shown as published on Google Play.

Description by Resmed (from Google Play)
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.
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More data about NightOwl Companion

Price Free
Total installs 370 thousand
Recent installs 8 thousand
Rating 4.75 based on 26 thousand ratings
Ranking Highly ranked
Version 4.2.0
App size 19.2 MB
Number of libraries 59
Designed for Android 9.0+
Suitable for Everyone
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Google Play Rating history and histogram

21K
4.1K
760
100
140

Installs over time

NightOwl Companion has been installed 370 thousand times. Over the past 30 days, it averaged 270 installs per day.

Changelog of NightOwl Companion

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Developer information for Resmed

Resmed

NightOwlSupport@resmed.com

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Comments on NightOwl Companion for Android

★★★★★ Veronica Castro · Oct 22, 2026
My Night owl Testing was very easy to assemble on my own on my index finger, in the comfort of my own home. Did not bother me one bit, I slept very good. If it were to be the old fashion way with staying over to sleep in a clinic, with all those wires attached to your chest and head. Especially sleeping on only your left side, I couldn't. This Night owl device is lightweight about an inch long and cute. Lies on the tip of your left index finger secured by special tape. I like this new technology.
★★★★★ Sherrie Leak · Oct 22, 2026
Easy to use. I am so glad I don't have to go through a night away from home with leads attached from head to toe.
★★★★★ Brian Wells · Oct 25, 2026
Much better than going to test site. So easy to use.
★☆☆☆☆ Ginger Manning · Oct 3, 2026
I didn't even want to give this app a "1-star" rating. I used it 6 nights, and each morning I got a notification that my sleep test was "unsuccessful." The first night, I admit, I had the sensor wrapped too tightly, but the next 4 nights, and after correcting my own error of wrapping too tightly, there "was an error with my smartphone." The last night I tested, I got no explanation as to why it was "unsuccessful."
★☆☆☆☆ Sandra B · Oct 18, 2026
When you open the app, the toggle to get started is buried under 3rd page of hype. No indication to SWIPE UP ON LAST PAGE to activate. Full of design flaws. Google for instructions first. Why not enclose written instructions along with your dire warnings about sleep apnea?

Google Play Rankings for NightOwl Companion

Top rankings

Rank Country Category List
77 United States Medical Top Free
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Ranking history in United States

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Technologies used by NightOwl Companion

28 permissions · 59 libraries
Subscribe to see full permission and library details
Trust & Safety: The app requires a broad set of permissions (including location, Bluetooth, camera, internet, and foreground services) to support sensor data collection and device communication. It provides a medical-use disclaimer and advises users to consult a healthcare provider before making medical decisions. Users should review granted permissions and follow device instructions to ensure safe use.
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