Ectosense Medical
NightOwl Companion is a medical app by Ectosense earning an estimated < $5k/mo on the App Store with 20k installs a month. Below are its 5 current App Store screenshots.
NightOwl Companion generates an estimated < $5k per month in App Store revenue, from around 20k downloads a month. Its listing holds a 4.8-star rating across 76,578 ratings. The app has been on the App Store since 2018. Figures are monthly estimates of worldwide App Store performance.
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.
From the App Store listing.