What data are you interested in seeing? I'm still a basic member and I had the same question before I bought the sense. Main things I was interested in was skin temperature, Sp02, and heart rate. I can see all these through the app, although not as user friendly as I would like. I'd like to see the actual skin temp in degrees and % Sp02, but it at least shows the nightly variation. Premium does have a little bit more data like Heart Rate Variation, but so far I've found basic to be sufficient although not as user friendly as it could be. Most of premium seems to be for coaching and guided programs which I have no interest in.
