I recently traded in my S0 Apple Watch towards the purchase of S3 Nike + Apple Watch. One of the apps I had installed on my S0 was Cardiogram. Cardiogram provided significant data that the S0/Watch OS3 did not. With charts, graphs and more data available from the S3/WatchOS 4, has Cardiogram become obsolete? Feels sort of redundant. Anyone with an S3 Apple Watch still use Cardiogram and find other uses for it or did you delete it? Just curious...