Android interface

So I've been rolling with this app for a while now. Recently, I started to question the accuracy of it, so I decided to get a Whoop 4.0 band, and surprisingly enough, they are fairly similar. The only difference is that Whoop shows the duration of sleep phases, whereas the sleep cycle does not, and that's what's lacking. Would adding an Android watch change anything? Like for iOS devices, sleep phases and their duration is displayed.