NightOwl Companion
NightOwl Companion gets 1k+ downloads a day worldwide (AppInsider estimate, September 2026, rounded down to a band).
NightOwl Companion is #59 in Medical Free in United States and charting in 1 of 24 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperEctosense
CategoryMedical
PriceFree
Released
Rating★ 4.8 (81k)
Version6.1.0
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026Installs (est.)1M+ worldwide
Rating
4.8 ★
81k ratings
Measured
Best rank now
#59
Medical FreeMeasured
NightOwl Companion on the App Store
App details
App ID
1397382074
Publisher
ResMed Inc.
Publisher country
United States
Content rating
4+
NightOwl Companion downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. iPhone downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where NightOwl Companion's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
Retention · share of new users still active
Day 1
Day 7
Day 30
Time spent · per daily user
Average time spent Pro
min a day
Sessions a day Pro
Time per session Pro
min
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 24 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | MedicalFree | #59 |
Apps near NightOwl Companion on the chart
Medical Free, around #59.
Ratings
App Store, worldwide.
Rating
4.8 ★
81k ratings
Measured
Ratings
81k
Measured
About NightOwl Companion
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.
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.
Latest updates
6.1.0
Performance improvements and bug fixes for a smoother, more reliable app experience.