Here's what I've done so far.
This has actually proved a little more complicated than originally thought!
Firstly, Facer doesn't seem to have data access for "Resting Heart Rate", "Floors" or "Active minutes" and I'm not sure there's an easy way to calculate this.
Secondly, the "Calories burnt" and "Distance" can be calculated but an an average estimate of
1 step = 2 feet
The stats are all based on a daily max step count of
10,000 steps. This can be edited in the design, but is hard-coded (it doesn't pull that data from your watch).
To get the ring effect I've had to use a masking technique and this can only be done when using a solid coloured background which is why I've moved them down from the cat's face onto the black bg.
As the calorie and distance stats are based on the step count, the rings will also move related to the step count max.
I hope that all makes sense, have a play around with it yourself and change however you see fit.