Sleep Number is best known for its adjustable firmness. I checked for accuracy by comparing the data to my Garmin Forerunner 945 smartwatch readings and my subjective experience. In the six months my wife and I tested the bed, Sleep Number made several tweaks to the app that have improved the sleep-tracking accuracy. After you track your sleep for several weeks and input your sleep goals, the app offers tips for more productive sleep. The Sleep Number 360 i8 Smart Bed uses ballistocardiography, a measure of ballistic forces coming from your heart, to calculate your sleep quality and provide a sleep score. It worked seamlessly and did a good job of facilitating restful, undisturbed sleep. This gives you consistent comfort and pressure relief. Using the SleepIQ app (available for iOS and Android), you can turn on the 'responsive air' function, which automatically adjusts the firmness as you change positions.

I'm a side sleeper but spend time in every sleeping position. Review of the Sleep Number 360 i8 Smart Bed

Sleep number bed queen adjustable